./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-81.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_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/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_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/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_56c326d0-f405-4bed-99fb-b22d64f8d13b/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 4ec23d859d65533fc787a9c2fed70b8c69daa3b1ed2a3fca10d530d490a26e0e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:39:24,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:39:24,805 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:39:24,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:39:24,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:39:24,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:39:24,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:39:24,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:39:24,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:39:24,834 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:39:24,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:39:24,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:39:24,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:39:24,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:39:24,837 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:39:24,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:39:24,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:39:24,838 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:39:24,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:39:24,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:39:24,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:39:24,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:39:24,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:39:24,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:39:24,844 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:39:24,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:39:24,845 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:39:24,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:39:24,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:39:24,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:39:24,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:39:24,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:24,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:39:24,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:39:24,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:39:24,848 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:39:24,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:39:24,848 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:39:24,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:39:24,848 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:39:24,849 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:39:24,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:39:24,849 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_56c326d0-f405-4bed-99fb-b22d64f8d13b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ec23d859d65533fc787a9c2fed70b8c69daa3b1ed2a3fca10d530d490a26e0e [2023-11-29 01:39:25,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:39:25,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:39:25,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:39:25,113 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:39:25,113 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:39:25,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-81.i [2023-11-29 01:39:27,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:39:28,045 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:39:28,046 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-81.i [2023-11-29 01:39:28,056 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/data/690c9e1fa/be1df3e2ced74a4fae4916d401be5af0/FLAG307ceb7a2 [2023-11-29 01:39:28,420 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/data/690c9e1fa/be1df3e2ced74a4fae4916d401be5af0 [2023-11-29 01:39:28,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:39:28,423 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:39:28,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:28,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:39:28,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:39:28,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90317d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28, skipping insertion in model container [2023-11-29 01:39:28,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,458 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:39:28,573 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_56c326d0-f405-4bed-99fb-b22d64f8d13b/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-81.i[913,926] [2023-11-29 01:39:28,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:28,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:39:28,650 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_56c326d0-f405-4bed-99fb-b22d64f8d13b/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-81.i[913,926] [2023-11-29 01:39:28,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:39:28,697 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:39:28,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28 WrapperNode [2023-11-29 01:39:28,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:39:28,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:28,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:39:28,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:39:28,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,755 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 191 [2023-11-29 01:39:28,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:39:28,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:39:28,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:39:28,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:39:28,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,768 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,788 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 01:39:28,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,817 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:39:28,818 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:39:28,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:39:28,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:39:28,819 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (1/1) ... [2023-11-29 01:39:28,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:39:28,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:28,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:39:28,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:39:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:39:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:39:28,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:39:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:39:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:39:28,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:39:28,938 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:39:28,940 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:39:29,281 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:39:29,315 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:39:29,316 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:39:29,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:29 BoogieIcfgContainer [2023-11-29 01:39:29,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:39:29,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:39:29,319 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:39:29,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:39:29,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:39:28" (1/3) ... [2023-11-29 01:39:29,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c55a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:29, skipping insertion in model container [2023-11-29 01:39:29,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:39:28" (2/3) ... [2023-11-29 01:39:29,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c55a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:39:29, skipping insertion in model container [2023-11-29 01:39:29,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:39:29" (3/3) ... [2023-11-29 01:39:29,325 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-81.i [2023-11-29 01:39:29,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:39:29,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:39:29,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:39:29,393 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;@4874d7df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:39:29,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:39:29,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 43 states have internal predecessors, (60), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 01:39:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-29 01:39:29,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:29,411 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:29,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:29,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash 990094624, now seen corresponding path program 1 times [2023-11-29 01:39:29,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:29,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125515774] [2023-11-29 01:39:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:29,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:29,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125515774] [2023-11-29 01:39:29,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:39:29,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136643677] [2023-11-29 01:39:29,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:29,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:29,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:29,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:29,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:39:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:29,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:39:29,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-11-29 01:39:29,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:29,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136643677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:29,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:29,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:39:29,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212030501] [2023-11-29 01:39:29,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:29,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:39:29,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:39:29,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:39:29,925 INFO L87 Difference]: Start difference. First operand has 77 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 43 states have internal predecessors, (60), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 01:39:29,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:29,973 INFO L93 Difference]: Finished difference Result 151 states and 278 transitions. [2023-11-29 01:39:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:39:29,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) Word has length 191 [2023-11-29 01:39:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:29,983 INFO L225 Difference]: With dead ends: 151 [2023-11-29 01:39:29,983 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 01:39:29,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 190 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 01:39:29,991 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:29,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:30,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 01:39:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-29 01:39:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 01:39:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 119 transitions. [2023-11-29 01:39:30,041 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 119 transitions. Word has length 191 [2023-11-29 01:39:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:30,042 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 119 transitions. [2023-11-29 01:39:30,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-29 01:39:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 119 transitions. [2023-11-29 01:39:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-29 01:39:30,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:30,047 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:30,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:39:30,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:39:30,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:30,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash -122591968, now seen corresponding path program 1 times [2023-11-29 01:39:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:30,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039675399] [2023-11-29 01:39:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:30,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:30,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:30,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383340731] [2023-11-29 01:39:30,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:30,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:30,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:30,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:39:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:30,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:39:30,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 01:39:31,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:39:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 18 proven. 75 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-11-29 01:39:31,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:31,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039675399] [2023-11-29 01:39:31,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:31,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383340731] [2023-11-29 01:39:31,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383340731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:39:31,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:39:31,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-11-29 01:39:31,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767943793] [2023-11-29 01:39:31,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:39:31,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:39:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:39:31,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:39:31,674 INFO L87 Difference]: Start difference. First operand 75 states and 119 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-29 01:39:32,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:32,915 INFO L93 Difference]: Finished difference Result 245 states and 375 transitions. [2023-11-29 01:39:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:39:32,919 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 191 [2023-11-29 01:39:32,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:32,923 INFO L225 Difference]: With dead ends: 245 [2023-11-29 01:39:32,924 INFO L226 Difference]: Without dead ends: 171 [2023-11-29 01:39:32,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:39:32,927 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 254 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:32,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 425 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:39:32,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-29 01:39:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 84. [2023-11-29 01:39:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 32 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 01:39:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 126 transitions. [2023-11-29 01:39:32,962 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 126 transitions. Word has length 191 [2023-11-29 01:39:32,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:32,963 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 126 transitions. [2023-11-29 01:39:32,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 4 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-11-29 01:39:32,964 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 126 transitions. [2023-11-29 01:39:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:39:32,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:32,968 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:32,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:39:33,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 01:39:33,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:33,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:33,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1106888201, now seen corresponding path program 1 times [2023-11-29 01:39:33,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:33,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741932366] [2023-11-29 01:39:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:33,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:33,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:33,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127659840] [2023-11-29 01:39:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:33,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:33,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:33,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:33,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:39:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:33,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:39:33,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:39:33,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:33,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741932366] [2023-11-29 01:39:33,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:39:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127659840] [2023-11-29 01:39:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127659840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:33,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:39:33,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:39:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756495244] [2023-11-29 01:39:33,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:33,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:33,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:33,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:39:33,364 INFO L87 Difference]: Start difference. First operand 84 states and 126 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:39:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:33,428 INFO L93 Difference]: Finished difference Result 214 states and 315 transitions. [2023-11-29 01:39:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:33,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:39:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:33,431 INFO L225 Difference]: With dead ends: 214 [2023-11-29 01:39:33,431 INFO L226 Difference]: Without dead ends: 131 [2023-11-29 01:39:33,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 190 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 01:39:33,434 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 48 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:33,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 244 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:39:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-29 01:39:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2023-11-29 01:39:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 80 states have internal predecessors, (102), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-29 01:39:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 186 transitions. [2023-11-29 01:39:33,461 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 186 transitions. Word has length 192 [2023-11-29 01:39:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:33,462 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 186 transitions. [2023-11-29 01:39:33,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:39:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 186 transitions. [2023-11-29 01:39:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:39:33,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:33,466 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:33,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:39:33,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:33,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:33,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:33,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1049629899, now seen corresponding path program 1 times [2023-11-29 01:39:33,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:33,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542752760] [2023-11-29 01:39:33,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:33,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:33,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:39:33,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996933675] [2023-11-29 01:39:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:33,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:33,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:33,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:33,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:39:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:33,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 01:39:33,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1336 proven. 336 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 01:39:52,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:40:04,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:04,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542752760] [2023-11-29 01:40:04,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:40:04,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996933675] [2023-11-29 01:40:04,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996933675] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:04,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:40:04,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [40] total 47 [2023-11-29 01:40:04,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192099558] [2023-11-29 01:40:04,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:04,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:40:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:04,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:40:04,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=1713, Unknown=1, NotChecked=0, Total=2162 [2023-11-29 01:40:04,107 INFO L87 Difference]: Start difference. First operand 128 states and 186 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:40:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:08,530 INFO L93 Difference]: Finished difference Result 505 states and 713 transitions. [2023-11-29 01:40:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:40:08,531 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:40:08,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:08,535 INFO L225 Difference]: With dead ends: 505 [2023-11-29 01:40:08,535 INFO L226 Difference]: Without dead ends: 378 [2023-11-29 01:40:08,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=627, Invalid=3032, Unknown=1, NotChecked=0, Total=3660 [2023-11-29 01:40:08,538 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 337 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:08,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 683 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:40:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-29 01:40:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 207. [2023-11-29 01:40:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 144 states have (on average 1.3680555555555556) internal successors, (197), 147 states have internal predecessors, (197), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:40:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 305 transitions. [2023-11-29 01:40:08,591 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 305 transitions. Word has length 192 [2023-11-29 01:40:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:08,591 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 305 transitions. [2023-11-29 01:40:08,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:40:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 305 transitions. [2023-11-29 01:40:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:40:08,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:08,595 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:08,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:40:08,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:08,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:08,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:08,798 INFO L85 PathProgramCache]: Analyzing trace with hash -569475438, now seen corresponding path program 1 times [2023-11-29 01:40:08,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:08,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906819986] [2023-11-29 01:40:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:08,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:40:08,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709691070] [2023-11-29 01:40:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:08,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:08,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:08,828 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:08,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:40:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:08,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:40:08,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1023 proven. 45 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-11-29 01:40:09,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-11-29 01:40:09,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:09,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906819986] [2023-11-29 01:40:09,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:40:09,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709691070] [2023-11-29 01:40:09,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709691070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:40:09,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:40:09,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 01:40:09,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740509847] [2023-11-29 01:40:09,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:40:09,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:40:09,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:09,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:40:09,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:40:09,227 INFO L87 Difference]: Start difference. First operand 207 states and 305 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-29 01:40:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:09,621 INFO L93 Difference]: Finished difference Result 425 states and 624 transitions. [2023-11-29 01:40:09,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:40:09,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 192 [2023-11-29 01:40:09,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:09,623 INFO L225 Difference]: With dead ends: 425 [2023-11-29 01:40:09,624 INFO L226 Difference]: Without dead ends: 219 [2023-11-29 01:40:09,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:40:09,625 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 91 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:09,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 222 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:40:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-29 01:40:09,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 213. [2023-11-29 01:40:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 149 states have (on average 1.3557046979865772) internal successors, (202), 152 states have internal predecessors, (202), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:40:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 310 transitions. [2023-11-29 01:40:09,678 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 310 transitions. Word has length 192 [2023-11-29 01:40:09,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:09,679 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 310 transitions. [2023-11-29 01:40:09,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 3 states have call successors, (47), 2 states have call predecessors, (47), 4 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2023-11-29 01:40:09,679 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 310 transitions. [2023-11-29 01:40:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:40:09,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:09,682 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:09,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:40:09,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:09,883 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:09,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:09,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1205531924, now seen corresponding path program 1 times [2023-11-29 01:40:09,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:09,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93500275] [2023-11-29 01:40:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:09,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:09,909 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:40:09,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594470816] [2023-11-29 01:40:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:09,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:09,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:09,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:09,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:40:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:10,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 01:40:10,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 01:40:27,839 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:40:33,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:33,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93500275] [2023-11-29 01:40:33,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:40:33,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594470816] [2023-11-29 01:40:33,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594470816] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:33,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:40:33,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-11-29 01:40:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846731062] [2023-11-29 01:40:33,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:33,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:40:33,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:33,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:40:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:40:33,987 INFO L87 Difference]: Start difference. First operand 213 states and 310 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:40:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:35,912 INFO L93 Difference]: Finished difference Result 630 states and 908 transitions. [2023-11-29 01:40:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:40:35,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:40:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:35,916 INFO L225 Difference]: With dead ends: 630 [2023-11-29 01:40:35,916 INFO L226 Difference]: Without dead ends: 418 [2023-11-29 01:40:35,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:40:35,918 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 336 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:35,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 686 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:40:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-29 01:40:35,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 224. [2023-11-29 01:40:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 160 states have (on average 1.375) internal successors, (220), 163 states have internal predecessors, (220), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:40:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 328 transitions. [2023-11-29 01:40:35,961 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 328 transitions. Word has length 192 [2023-11-29 01:40:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:35,962 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 328 transitions. [2023-11-29 01:40:35,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:40:35,963 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 328 transitions. [2023-11-29 01:40:35,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:40:35,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:35,965 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:35,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:40:36,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:36,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:36,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:36,166 INFO L85 PathProgramCache]: Analyzing trace with hash -369571529, now seen corresponding path program 1 times [2023-11-29 01:40:36,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:36,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375876638] [2023-11-29 01:40:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:36,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:36,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:40:36,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682605070] [2023-11-29 01:40:36,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:36,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:36,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:36,186 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:36,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:40:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:36,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 01:40:36,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1195 proven. 183 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-11-29 01:40:46,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:40:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:40:51,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375876638] [2023-11-29 01:40:51,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:40:51,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682605070] [2023-11-29 01:40:51,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682605070] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:51,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:40:51,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 28 [2023-11-29 01:40:51,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985896320] [2023-11-29 01:40:51,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:51,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:40:51,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:51,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:40:51,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:40:51,265 INFO L87 Difference]: Start difference. First operand 224 states and 328 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:40:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:55,053 INFO L93 Difference]: Finished difference Result 607 states and 861 transitions. [2023-11-29 01:40:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:40:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:40:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:55,058 INFO L225 Difference]: With dead ends: 607 [2023-11-29 01:40:55,058 INFO L226 Difference]: Without dead ends: 384 [2023-11-29 01:40:55,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:40:55,060 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 356 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:55,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 742 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:40:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-29 01:40:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 226. [2023-11-29 01:40:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 162 states have (on average 1.382716049382716) internal successors, (224), 165 states have internal predecessors, (224), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:40:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 332 transitions. [2023-11-29 01:40:55,103 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 332 transitions. Word has length 192 [2023-11-29 01:40:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:55,104 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 332 transitions. [2023-11-29 01:40:55,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:40:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 332 transitions. [2023-11-29 01:40:55,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:40:55,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:55,106 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:55,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:40:55,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:55,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:55,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:55,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1885590294, now seen corresponding path program 1 times [2023-11-29 01:40:55,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:55,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202615776] [2023-11-29 01:40:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:55,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:55,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:40:55,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531800690] [2023-11-29 01:40:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:55,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:55,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:55,328 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:55,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:40:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:55,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 01:40:55,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1353 proven. 318 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-29 01:41:19,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:41:26,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:41:26,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202615776] [2023-11-29 01:41:26,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:41:26,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531800690] [2023-11-29 01:41:26,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531800690] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:41:26,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:41:26,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [37] total 44 [2023-11-29 01:41:26,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446054650] [2023-11-29 01:41:26,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:41:26,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:41:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:41:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:41:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=1506, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 01:41:26,842 INFO L87 Difference]: Start difference. First operand 226 states and 332 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:41:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:29,829 INFO L93 Difference]: Finished difference Result 648 states and 932 transitions. [2023-11-29 01:41:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:41:29,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:41:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:29,833 INFO L225 Difference]: With dead ends: 648 [2023-11-29 01:41:29,833 INFO L226 Difference]: Without dead ends: 423 [2023-11-29 01:41:29,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=516, Invalid=2454, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 01:41:29,836 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 376 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:29,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 617 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:41:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-29 01:41:29,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 225. [2023-11-29 01:41:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 161 states have (on average 1.3788819875776397) internal successors, (222), 164 states have internal predecessors, (222), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:41:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 330 transitions. [2023-11-29 01:41:29,877 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 330 transitions. Word has length 192 [2023-11-29 01:41:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:29,878 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 330 transitions. [2023-11-29 01:41:29,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:41:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 330 transitions. [2023-11-29 01:41:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:41:29,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:29,880 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:29,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:41:30,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:41:30,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:41:30,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash -791464461, now seen corresponding path program 1 times [2023-11-29 01:41:30,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:41:30,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841807825] [2023-11-29 01:41:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:30,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:41:30,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:41:30,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57327328] [2023-11-29 01:41:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:30,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:41:30,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:41:30,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:41:30,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:41:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:30,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 01:41:30,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:41:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1195 proven. 183 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2023-11-29 01:41:40,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:41:46,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:41:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841807825] [2023-11-29 01:41:46,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:41:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57327328] [2023-11-29 01:41:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57327328] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:41:46,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:41:46,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 28 [2023-11-29 01:41:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081879018] [2023-11-29 01:41:46,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:41:46,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:41:46,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:41:46,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:41:46,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:41:46,445 INFO L87 Difference]: Start difference. First operand 225 states and 330 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:41:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:41:50,067 INFO L93 Difference]: Finished difference Result 608 states and 861 transitions. [2023-11-29 01:41:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:41:50,068 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:41:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:41:50,071 INFO L225 Difference]: With dead ends: 608 [2023-11-29 01:41:50,071 INFO L226 Difference]: Without dead ends: 384 [2023-11-29 01:41:50,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:41:50,073 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 245 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:41:50,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 773 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:41:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-29 01:41:50,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 226. [2023-11-29 01:41:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 162 states have (on average 1.382716049382716) internal successors, (224), 165 states have internal predecessors, (224), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:41:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 332 transitions. [2023-11-29 01:41:50,124 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 332 transitions. Word has length 192 [2023-11-29 01:41:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:41:50,124 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 332 transitions. [2023-11-29 01:41:50,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:41:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 332 transitions. [2023-11-29 01:41:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:41:50,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:41:50,126 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:50,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:41:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:41:50,327 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:41:50,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:41:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1463697362, now seen corresponding path program 1 times [2023-11-29 01:41:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:41:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979740427] [2023-11-29 01:41:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:41:50,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:41:50,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658963257] [2023-11-29 01:41:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:41:50,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:41:50,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:41:50,346 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:41:50,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:41:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:41:50,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:41:50,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 01:42:03,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:42:09,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:42:09,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979740427] [2023-11-29 01:42:09,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:42:09,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658963257] [2023-11-29 01:42:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658963257] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:42:09,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:42:09,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 01:42:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894763712] [2023-11-29 01:42:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:42:09,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:42:09,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:42:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:42:09,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:42:09,835 INFO L87 Difference]: Start difference. First operand 226 states and 332 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:42:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:42:11,898 INFO L93 Difference]: Finished difference Result 653 states and 940 transitions. [2023-11-29 01:42:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:42:11,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:42:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:42:11,902 INFO L225 Difference]: With dead ends: 653 [2023-11-29 01:42:11,902 INFO L226 Difference]: Without dead ends: 428 [2023-11-29 01:42:11,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2023-11-29 01:42:11,904 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 208 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:42:11,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 624 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:42:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-11-29 01:42:11,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 225. [2023-11-29 01:42:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 161 states have (on average 1.3788819875776397) internal successors, (222), 164 states have internal predecessors, (222), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:42:11,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 330 transitions. [2023-11-29 01:42:11,964 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 330 transitions. Word has length 192 [2023-11-29 01:42:11,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:11,964 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 330 transitions. [2023-11-29 01:42:11,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:42:11,964 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 330 transitions. [2023-11-29 01:42:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:42:11,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:11,966 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:11,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:42:12,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:42:12,167 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:42:12,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:12,167 INFO L85 PathProgramCache]: Analyzing trace with hash -111406091, now seen corresponding path program 1 times [2023-11-29 01:42:12,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:42:12,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285249536] [2023-11-29 01:42:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:12,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:42:12,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:42:12,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731459933] [2023-11-29 01:42:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:12,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:42:12,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:42:12,186 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:42:12,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:42:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:12,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 01:42:12,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:42:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1336 proven. 336 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 01:42:30,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:42:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:42:42,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:42:42,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285249536] [2023-11-29 01:42:42,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:42:42,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731459933] [2023-11-29 01:42:42,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731459933] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:42:42,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:42:42,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [41] total 49 [2023-11-29 01:42:42,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853955013] [2023-11-29 01:42:42,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:42:42,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:42:42,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:42:42,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:42:42,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=1871, Unknown=1, NotChecked=0, Total=2352 [2023-11-29 01:42:42,863 INFO L87 Difference]: Start difference. First operand 225 states and 330 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:42:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:42:48,758 INFO L93 Difference]: Finished difference Result 617 states and 869 transitions. [2023-11-29 01:42:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 01:42:48,759 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:42:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:42:48,763 INFO L225 Difference]: With dead ends: 617 [2023-11-29 01:42:48,763 INFO L226 Difference]: Without dead ends: 393 [2023-11-29 01:42:48,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=686, Invalid=3345, Unknown=1, NotChecked=0, Total=4032 [2023-11-29 01:42:48,766 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 345 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:42:48,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 548 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:42:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-11-29 01:42:48,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 225. [2023-11-29 01:42:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 161 states have (on average 1.3788819875776397) internal successors, (222), 164 states have internal predecessors, (222), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:42:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 330 transitions. [2023-11-29 01:42:48,827 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 330 transitions. Word has length 192 [2023-11-29 01:42:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:42:48,828 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 330 transitions. [2023-11-29 01:42:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:42:48,828 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 330 transitions. [2023-11-29 01:42:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:42:48,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:42:48,830 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:48,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:42:49,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:42:49,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:42:49,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:42:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2143755732, now seen corresponding path program 1 times [2023-11-29 01:42:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:42:49,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110340023] [2023-11-29 01:42:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:42:49,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:42:49,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678256567] [2023-11-29 01:42:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:42:49,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:42:49,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:42:49,057 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:42:49,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:42:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:42:49,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:42:49,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:43:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 670 proven. 144 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2023-11-29 01:43:00,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:43:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:43:03,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:43:03,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110340023] [2023-11-29 01:43:03,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:43:03,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678256567] [2023-11-29 01:43:03,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678256567] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:43:03,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:43:03,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 21 [2023-11-29 01:43:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255311803] [2023-11-29 01:43:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:43:03,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:43:03,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:43:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:43:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:43:03,947 INFO L87 Difference]: Start difference. First operand 225 states and 330 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:43:05,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:43:05,868 INFO L93 Difference]: Finished difference Result 674 states and 967 transitions. [2023-11-29 01:43:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:43:05,869 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:43:05,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:43:05,871 INFO L225 Difference]: With dead ends: 674 [2023-11-29 01:43:05,872 INFO L226 Difference]: Without dead ends: 450 [2023-11-29 01:43:05,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:43:05,873 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 177 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:43:05,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 689 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:43:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-11-29 01:43:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 216. [2023-11-29 01:43:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 152 states have (on average 1.368421052631579) internal successors, (208), 155 states have internal predecessors, (208), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:43:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 316 transitions. [2023-11-29 01:43:05,915 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 316 transitions. Word has length 192 [2023-11-29 01:43:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:43:05,916 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 316 transitions. [2023-11-29 01:43:05,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:43:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 316 transitions. [2023-11-29 01:43:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:43:05,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:43:05,917 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:05,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:43:06,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:43:06,118 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:43:06,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:43:06,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2060747149, now seen corresponding path program 1 times [2023-11-29 01:43:06,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:43:06,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30536715] [2023-11-29 01:43:06,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:43:06,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:43:06,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:43:06,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800092142] [2023-11-29 01:43:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:43:06,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:43:06,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:43:06,135 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:43:06,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:43:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:06,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:43:06,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:43:15,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1228 proven. 117 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-29 01:43:15,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:43:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:43:23,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:43:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30536715] [2023-11-29 01:43:23,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:43:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800092142] [2023-11-29 01:43:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800092142] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:43:23,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:43:23,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2023-11-29 01:43:23,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962629012] [2023-11-29 01:43:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:43:23,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:43:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:43:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:43:23,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:43:23,321 INFO L87 Difference]: Start difference. First operand 216 states and 316 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:43:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:43:27,548 INFO L93 Difference]: Finished difference Result 721 states and 1020 transitions. [2023-11-29 01:43:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:43:27,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:43:27,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:43:27,551 INFO L225 Difference]: With dead ends: 721 [2023-11-29 01:43:27,551 INFO L226 Difference]: Without dead ends: 506 [2023-11-29 01:43:27,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:43:27,553 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 342 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:43:27,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 410 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:43:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-29 01:43:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 233. [2023-11-29 01:43:27,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 169 states have (on average 1.3727810650887573) internal successors, (232), 172 states have internal predecessors, (232), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:43:27,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 340 transitions. [2023-11-29 01:43:27,600 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 340 transitions. Word has length 192 [2023-11-29 01:43:27,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:43:27,600 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 340 transitions. [2023-11-29 01:43:27,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:43:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 340 transitions. [2023-11-29 01:43:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:43:27,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:43:27,601 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:27,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:43:27,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:43:27,802 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:43:27,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:43:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 194414674, now seen corresponding path program 1 times [2023-11-29 01:43:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:43:27,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264160275] [2023-11-29 01:43:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:43:27,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:43:27,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:43:27,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661758867] [2023-11-29 01:43:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:43:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:43:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:43:27,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:43:27,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:43:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:27,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 01:43:27,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1353 proven. 318 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-29 01:44:01,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:44:10,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:10,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264160275] [2023-11-29 01:44:10,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:44:10,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661758867] [2023-11-29 01:44:10,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661758867] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:10,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:44:10,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [36] total 43 [2023-11-29 01:44:10,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856423274] [2023-11-29 01:44:10,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:10,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:44:10,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:44:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1411, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:44:10,562 INFO L87 Difference]: Start difference. First operand 233 states and 340 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:44:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:18,666 INFO L93 Difference]: Finished difference Result 842 states and 1231 transitions. [2023-11-29 01:44:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:44:18,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:44:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:18,670 INFO L225 Difference]: With dead ends: 842 [2023-11-29 01:44:18,670 INFO L226 Difference]: Without dead ends: 610 [2023-11-29 01:44:18,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 01:44:18,672 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 236 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:18,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 521 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 01:44:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2023-11-29 01:44:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 239. [2023-11-29 01:44:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 175 states have (on average 1.3714285714285714) internal successors, (240), 178 states have internal predecessors, (240), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:44:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 348 transitions. [2023-11-29 01:44:18,718 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 348 transitions. Word has length 192 [2023-11-29 01:44:18,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:18,719 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 348 transitions. [2023-11-29 01:44:18,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:44:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 348 transitions. [2023-11-29 01:44:18,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:44:18,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:18,720 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:18,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:44:18,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:44:18,921 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:18,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:18,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1380688779, now seen corresponding path program 1 times [2023-11-29 01:44:18,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:18,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57007238] [2023-11-29 01:44:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:18,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:18,936 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:44:18,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250938305] [2023-11-29 01:44:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:18,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:18,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:18,937 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:18,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:44:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:19,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 01:44:19,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 643 proven. 75 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2023-11-29 01:44:27,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:44:32,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57007238] [2023-11-29 01:44:32,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:44:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250938305] [2023-11-29 01:44:32,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250938305] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:32,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:44:32,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2023-11-29 01:44:32,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782843939] [2023-11-29 01:44:32,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:32,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:44:32,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:32,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:44:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:44:32,805 INFO L87 Difference]: Start difference. First operand 239 states and 348 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:44:36,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:36,678 INFO L93 Difference]: Finished difference Result 827 states and 1211 transitions. [2023-11-29 01:44:36,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:44:36,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:44:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:36,681 INFO L225 Difference]: With dead ends: 827 [2023-11-29 01:44:36,681 INFO L226 Difference]: Without dead ends: 589 [2023-11-29 01:44:36,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:44:36,683 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 290 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:36,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 427 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:44:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-11-29 01:44:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 247. [2023-11-29 01:44:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.3825136612021858) internal successors, (253), 186 states have internal predecessors, (253), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:44:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 361 transitions. [2023-11-29 01:44:36,730 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 361 transitions. Word has length 192 [2023-11-29 01:44:36,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:36,730 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 361 transitions. [2023-11-29 01:44:36,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:44:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 361 transitions. [2023-11-29 01:44:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:44:36,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:36,731 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:36,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:44:36,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:44:36,932 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:36,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1802581711, now seen corresponding path program 1 times [2023-11-29 01:44:36,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:36,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43031772] [2023-11-29 01:44:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:36,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:44:36,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140290590] [2023-11-29 01:44:36,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:36,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:36,947 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:36,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:44:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:37,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 01:44:37,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1228 proven. 117 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-29 01:44:45,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:44:53,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43031772] [2023-11-29 01:44:53,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:44:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140290590] [2023-11-29 01:44:53,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140290590] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:53,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:44:53,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-11-29 01:44:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180652000] [2023-11-29 01:44:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:53,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:44:53,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:44:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:44:53,357 INFO L87 Difference]: Start difference. First operand 247 states and 361 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:44:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:59,079 INFO L93 Difference]: Finished difference Result 651 states and 915 transitions. [2023-11-29 01:44:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:44:59,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:44:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:59,082 INFO L225 Difference]: With dead ends: 651 [2023-11-29 01:44:59,082 INFO L226 Difference]: Without dead ends: 405 [2023-11-29 01:44:59,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=289, Invalid=1043, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:44:59,084 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 199 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:59,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 498 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 01:44:59,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-29 01:44:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 250. [2023-11-29 01:44:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 186 states have (on average 1.3870967741935485) internal successors, (258), 189 states have internal predecessors, (258), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:44:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 366 transitions. [2023-11-29 01:44:59,132 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 366 transitions. Word has length 192 [2023-11-29 01:44:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:59,132 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 366 transitions. [2023-11-29 01:44:59,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:44:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 366 transitions. [2023-11-29 01:44:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:44:59,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:59,133 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:59,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:44:59,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:44:59,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:59,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:59,334 INFO L85 PathProgramCache]: Analyzing trace with hash 452580112, now seen corresponding path program 1 times [2023-11-29 01:44:59,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:59,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370115650] [2023-11-29 01:44:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:59,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:59,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:44:59,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136596758] [2023-11-29 01:44:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:59,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:59,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:59,351 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:59,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:44:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:59,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:44:59,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:45:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:45:12,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:45:12,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:12,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370115650] [2023-11-29 01:45:12,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:45:12,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136596758] [2023-11-29 01:45:12,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136596758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:12,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:12,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:45:12,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316551849] [2023-11-29 01:45:12,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:12,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:45:12,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:12,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:45:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:45:12,502 INFO L87 Difference]: Start difference. First operand 250 states and 366 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:45:15,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:15,658 INFO L93 Difference]: Finished difference Result 590 states and 847 transitions. [2023-11-29 01:45:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:45:15,659 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:45:15,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:15,661 INFO L225 Difference]: With dead ends: 590 [2023-11-29 01:45:15,661 INFO L226 Difference]: Without dead ends: 341 [2023-11-29 01:45:15,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:45:15,662 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 107 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:15,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 513 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 01:45:15,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-29 01:45:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 249. [2023-11-29 01:45:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 185 states have (on average 1.3837837837837839) internal successors, (256), 188 states have internal predecessors, (256), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:45:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 364 transitions. [2023-11-29 01:45:15,710 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 364 transitions. Word has length 192 [2023-11-29 01:45:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:15,710 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 364 transitions. [2023-11-29 01:45:15,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:45:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 364 transitions. [2023-11-29 01:45:15,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:45:15,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:15,711 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:45:15,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:45:15,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:45:15,912 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:15,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1122523341, now seen corresponding path program 1 times [2023-11-29 01:45:15,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:15,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562232984] [2023-11-29 01:45:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:15,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:15,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:45:15,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084525349] [2023-11-29 01:45:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:15,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:45:15,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:45:15,928 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:45:15,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:45:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:17,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 01:45:17,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:45:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1239 proven. 114 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2023-11-29 01:45:24,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:45:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:45:30,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562232984] [2023-11-29 01:45:30,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:45:30,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084525349] [2023-11-29 01:45:30,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084525349] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:45:30,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:45:30,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-11-29 01:45:30,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936322216] [2023-11-29 01:45:30,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:30,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:45:30,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:30,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:45:30,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2023-11-29 01:45:30,332 INFO L87 Difference]: Start difference. First operand 249 states and 364 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:45:35,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:35,434 INFO L93 Difference]: Finished difference Result 653 states and 917 transitions. [2023-11-29 01:45:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:45:35,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:45:35,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:35,438 INFO L225 Difference]: With dead ends: 653 [2023-11-29 01:45:35,438 INFO L226 Difference]: Without dead ends: 405 [2023-11-29 01:45:35,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=289, Invalid=1043, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:45:35,439 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 247 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:35,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 392 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:45:35,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-29 01:45:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 250. [2023-11-29 01:45:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 186 states have (on average 1.3870967741935485) internal successors, (258), 189 states have internal predecessors, (258), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:45:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 366 transitions. [2023-11-29 01:45:35,489 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 366 transitions. Word has length 192 [2023-11-29 01:45:35,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:35,489 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 366 transitions. [2023-11-29 01:45:35,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:45:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 366 transitions. [2023-11-29 01:45:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-29 01:45:35,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:35,491 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:45:35,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:45:35,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:45:35,691 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:35,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:35,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1132638482, now seen corresponding path program 1 times [2023-11-29 01:45:35,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:35,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912832709] [2023-11-29 01:45:35,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:35,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:35,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:45:35,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7670368] [2023-11-29 01:45:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:35,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:45:35,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:45:35,709 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:45:35,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:45:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:35,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 01:45:35,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:45:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1186 proven. 240 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2023-11-29 01:45:54,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:46:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:05,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912832709] [2023-11-29 01:46:05,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:05,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7670368] [2023-11-29 01:46:05,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7670368] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:05,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:46:05,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [33] total 40 [2023-11-29 01:46:05,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981394188] [2023-11-29 01:46:05,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:05,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:46:05,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:46:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1223, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:46:05,199 INFO L87 Difference]: Start difference. First operand 250 states and 366 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:46:15,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:46:37,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:47:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:02,121 INFO L93 Difference]: Finished difference Result 809 states and 1156 transitions. [2023-11-29 01:47:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:47:02,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 192 [2023-11-29 01:47:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:02,124 INFO L225 Difference]: With dead ends: 809 [2023-11-29 01:47:02,124 INFO L226 Difference]: Without dead ends: 560 [2023-11-29 01:47:02,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=505, Invalid=2465, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 01:47:02,126 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 260 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:02,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 531 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 553 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2023-11-29 01:47:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-29 01:47:02,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 249. [2023-11-29 01:47:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 185 states have (on average 1.3891891891891892) internal successors, (257), 188 states have internal predecessors, (257), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:47:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 365 transitions. [2023-11-29 01:47:02,179 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 365 transitions. Word has length 192 [2023-11-29 01:47:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:02,179 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 365 transitions. [2023-11-29 01:47:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 365 transitions. [2023-11-29 01:47:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:47:02,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:02,181 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:02,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:47:02,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:02,381 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:02,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:02,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2063965536, now seen corresponding path program 1 times [2023-11-29 01:47:02,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:02,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069058088] [2023-11-29 01:47:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:02,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:02,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:02,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364628216] [2023-11-29 01:47:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:02,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:02,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:02,395 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:02,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:47:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:02,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:47:02,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 643 proven. 75 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2023-11-29 01:47:02,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:47:02,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:02,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069058088] [2023-11-29 01:47:02,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:02,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364628216] [2023-11-29 01:47:02,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364628216] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:47:02,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:47:02,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2023-11-29 01:47:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291564572] [2023-11-29 01:47:02,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:02,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:47:02,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:02,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:47:02,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:47:02,856 INFO L87 Difference]: Start difference. First operand 249 states and 365 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:03,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:03,223 INFO L93 Difference]: Finished difference Result 607 states and 877 transitions. [2023-11-29 01:47:03,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:47:03,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:47:03,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:03,225 INFO L225 Difference]: With dead ends: 607 [2023-11-29 01:47:03,225 INFO L226 Difference]: Without dead ends: 359 [2023-11-29 01:47:03,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:47:03,227 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 154 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:03,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 345 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:47:03,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-29 01:47:03,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 241. [2023-11-29 01:47:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 177 states have (on average 1.384180790960452) internal successors, (245), 180 states have internal predecessors, (245), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:47:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 353 transitions. [2023-11-29 01:47:03,288 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 353 transitions. Word has length 193 [2023-11-29 01:47:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:03,288 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 353 transitions. [2023-11-29 01:47:03,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 353 transitions. [2023-11-29 01:47:03,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:47:03,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:03,289 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:03,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:47:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:03,490 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:03,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash -315726302, now seen corresponding path program 1 times [2023-11-29 01:47:03,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:03,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311404914] [2023-11-29 01:47:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:03,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:03,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275271298] [2023-11-29 01:47:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:03,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:03,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:03,504 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:03,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:47:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:03,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:47:03,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:47:09,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311404914] [2023-11-29 01:47:09,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275271298] [2023-11-29 01:47:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275271298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:47:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906831923] [2023-11-29 01:47:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:47:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:47:09,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:47:09,270 INFO L87 Difference]: Start difference. First operand 241 states and 353 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:10,188 INFO L93 Difference]: Finished difference Result 528 states and 763 transitions. [2023-11-29 01:47:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:47:10,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:47:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:10,190 INFO L225 Difference]: With dead ends: 528 [2023-11-29 01:47:10,190 INFO L226 Difference]: Without dead ends: 288 [2023-11-29 01:47:10,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:47:10,191 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 111 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:10,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 513 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:47:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-29 01:47:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 236. [2023-11-29 01:47:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 172 states have (on average 1.3604651162790697) internal successors, (234), 175 states have internal predecessors, (234), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:47:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 342 transitions. [2023-11-29 01:47:10,260 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 342 transitions. Word has length 193 [2023-11-29 01:47:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:10,260 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 342 transitions. [2023-11-29 01:47:10,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 342 transitions. [2023-11-29 01:47:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:47:10,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:10,261 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:10,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:47:10,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:10,462 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:10,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:10,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1924986307, now seen corresponding path program 1 times [2023-11-29 01:47:10,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:10,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560308769] [2023-11-29 01:47:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:10,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:10,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:10,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886999321] [2023-11-29 01:47:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:10,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:10,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:10,480 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:10,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:47:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:10,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:47:10,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:47:17,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:17,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:17,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560308769] [2023-11-29 01:47:17,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:17,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886999321] [2023-11-29 01:47:17,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886999321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:17,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:17,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:47:17,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192990252] [2023-11-29 01:47:17,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:17,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:47:17,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:17,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:47:17,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:47:17,046 INFO L87 Difference]: Start difference. First operand 236 states and 342 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:18,254 INFO L93 Difference]: Finished difference Result 519 states and 742 transitions. [2023-11-29 01:47:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:47:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:47:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:18,256 INFO L225 Difference]: With dead ends: 519 [2023-11-29 01:47:18,256 INFO L226 Difference]: Without dead ends: 284 [2023-11-29 01:47:18,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:47:18,257 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 140 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:18,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 437 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:47:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-29 01:47:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 236. [2023-11-29 01:47:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 172 states have (on average 1.3604651162790697) internal successors, (234), 175 states have internal predecessors, (234), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:47:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 342 transitions. [2023-11-29 01:47:18,330 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 342 transitions. Word has length 193 [2023-11-29 01:47:18,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:18,331 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 342 transitions. [2023-11-29 01:47:18,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:18,331 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 342 transitions. [2023-11-29 01:47:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:47:18,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:18,332 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:18,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:47:18,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:18,533 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:18,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1689922619, now seen corresponding path program 1 times [2023-11-29 01:47:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:18,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727147540] [2023-11-29 01:47:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:18,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:18,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:18,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098817352] [2023-11-29 01:47:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:18,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:18,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:18,548 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:18,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:47:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:18,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:47:18,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:47:21,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:21,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:21,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727147540] [2023-11-29 01:47:21,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:21,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098817352] [2023-11-29 01:47:21,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098817352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:21,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:21,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:47:21,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996547067] [2023-11-29 01:47:21,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:21,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:47:21,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:21,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:47:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:47:22,000 INFO L87 Difference]: Start difference. First operand 236 states and 342 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:23,227 INFO L93 Difference]: Finished difference Result 519 states and 741 transitions. [2023-11-29 01:47:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:47:23,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:47:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:23,229 INFO L225 Difference]: With dead ends: 519 [2023-11-29 01:47:23,229 INFO L226 Difference]: Without dead ends: 284 [2023-11-29 01:47:23,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:47:23,231 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 96 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:23,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 460 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:47:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-29 01:47:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 226. [2023-11-29 01:47:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 162 states have (on average 1.3518518518518519) internal successors, (219), 165 states have internal predecessors, (219), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:47:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 327 transitions. [2023-11-29 01:47:23,312 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 327 transitions. Word has length 193 [2023-11-29 01:47:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:23,312 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 327 transitions. [2023-11-29 01:47:23,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 327 transitions. [2023-11-29 01:47:23,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:47:23,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:23,314 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:23,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:47:23,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:47:23,515 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:23,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:23,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1609820607, now seen corresponding path program 1 times [2023-11-29 01:47:23,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:23,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91494137] [2023-11-29 01:47:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:23,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:23,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:23,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105433117] [2023-11-29 01:47:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:23,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:23,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:23,539 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:23,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:47:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:23,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:47:23,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1228 proven. 117 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-29 01:47:33,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:47:42,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:42,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91494137] [2023-11-29 01:47:42,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:42,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105433117] [2023-11-29 01:47:42,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105433117] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:47:42,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:47:42,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 25 [2023-11-29 01:47:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489467880] [2023-11-29 01:47:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:42,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:47:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:47:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:47:42,668 INFO L87 Difference]: Start difference. First operand 226 states and 327 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:54,921 INFO L93 Difference]: Finished difference Result 654 states and 904 transitions. [2023-11-29 01:47:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:47:54,922 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:47:54,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:54,924 INFO L225 Difference]: With dead ends: 654 [2023-11-29 01:47:54,924 INFO L226 Difference]: Without dead ends: 429 [2023-11-29 01:47:54,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=423, Invalid=1469, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 01:47:54,926 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 278 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:54,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 717 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 01:47:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-11-29 01:47:54,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 230. [2023-11-29 01:47:54,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 166 states have (on average 1.3614457831325302) internal successors, (226), 169 states have internal predecessors, (226), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:47:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 334 transitions. [2023-11-29 01:47:54,984 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 334 transitions. Word has length 193 [2023-11-29 01:47:54,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:54,985 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 334 transitions. [2023-11-29 01:47:54,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:47:54,985 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 334 transitions. [2023-11-29 01:47:54,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:47:54,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:54,986 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:54,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:47:55,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:47:55,187 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:55,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -429984866, now seen corresponding path program 1 times [2023-11-29 01:47:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:55,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956780105] [2023-11-29 01:47:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:55,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:55,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990134184] [2023-11-29 01:47:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:55,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:55,203 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:55,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:47:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:55,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:47:55,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:48:08,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:08,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:08,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956780105] [2023-11-29 01:48:08,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:08,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990134184] [2023-11-29 01:48:08,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990134184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:08,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:08,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:48:08,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410698121] [2023-11-29 01:48:08,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:08,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:48:08,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:08,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:48:08,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:48:08,581 INFO L87 Difference]: Start difference. First operand 230 states and 334 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:48:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:13,556 INFO L93 Difference]: Finished difference Result 593 states and 843 transitions. [2023-11-29 01:48:13,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:48:13,557 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:48:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:13,559 INFO L225 Difference]: With dead ends: 593 [2023-11-29 01:48:13,559 INFO L226 Difference]: Without dead ends: 364 [2023-11-29 01:48:13,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:48:13,560 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 234 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:13,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 548 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 01:48:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-29 01:48:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 229. [2023-11-29 01:48:13,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 165 states have (on average 1.3575757575757577) internal successors, (224), 168 states have internal predecessors, (224), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:48:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 332 transitions. [2023-11-29 01:48:13,633 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 332 transitions. Word has length 193 [2023-11-29 01:48:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:13,633 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 332 transitions. [2023-11-29 01:48:13,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:48:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 332 transitions. [2023-11-29 01:48:13,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:48:13,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:13,635 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:13,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:48:13,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:48:13,836 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:13,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2005088319, now seen corresponding path program 1 times [2023-11-29 01:48:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:13,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165220028] [2023-11-29 01:48:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:13,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:13,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251361112] [2023-11-29 01:48:13,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:13,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:13,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:13,853 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:13,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:48:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:13,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 01:48:13,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1359 proven. 288 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-11-29 01:48:31,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:48:43,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165220028] [2023-11-29 01:48:43,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251361112] [2023-11-29 01:48:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251361112] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:48:43,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:48:43,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [38] total 47 [2023-11-29 01:48:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346229552] [2023-11-29 01:48:43,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:43,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:48:43,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:43,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:48:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1701, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 01:48:43,527 INFO L87 Difference]: Start difference. First operand 229 states and 332 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:48:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:50,887 INFO L93 Difference]: Finished difference Result 631 states and 882 transitions. [2023-11-29 01:48:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:48:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:48:50,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:50,890 INFO L225 Difference]: With dead ends: 631 [2023-11-29 01:48:50,890 INFO L226 Difference]: Without dead ends: 403 [2023-11-29 01:48:50,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=643, Invalid=2779, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 01:48:50,892 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 307 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:50,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 454 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:48:50,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-11-29 01:48:50,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 230. [2023-11-29 01:48:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 166 states have (on average 1.3614457831325302) internal successors, (226), 169 states have internal predecessors, (226), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:48:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 334 transitions. [2023-11-29 01:48:50,950 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 334 transitions. Word has length 193 [2023-11-29 01:48:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:50,950 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 334 transitions. [2023-11-29 01:48:50,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:48:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 334 transitions. [2023-11-29 01:48:50,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:48:50,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:50,951 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:50,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 01:48:51,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:51,152 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:51,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash 250073504, now seen corresponding path program 1 times [2023-11-29 01:48:51,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:51,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340204417] [2023-11-29 01:48:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:51,166 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:51,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130318902] [2023-11-29 01:48:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:51,167 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:51,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:48:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:51,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:48:51,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 643 proven. 75 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2023-11-29 01:48:59,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:49:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:49:04,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:04,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340204417] [2023-11-29 01:49:04,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:04,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130318902] [2023-11-29 01:49:04,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130318902] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:49:04,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:49:04,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2023-11-29 01:49:04,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193965406] [2023-11-29 01:49:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:04,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:49:04,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:04,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:49:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:49:04,794 INFO L87 Difference]: Start difference. First operand 230 states and 334 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:49:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:10,652 INFO L93 Difference]: Finished difference Result 652 states and 937 transitions. [2023-11-29 01:49:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:49:10,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:49:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:10,655 INFO L225 Difference]: With dead ends: 652 [2023-11-29 01:49:10,655 INFO L226 Difference]: Without dead ends: 423 [2023-11-29 01:49:10,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:49:10,657 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 281 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:10,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 549 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:49:10,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-29 01:49:10,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 227. [2023-11-29 01:49:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 163 states have (on average 1.3558282208588956) internal successors, (221), 166 states have internal predecessors, (221), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:49:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 329 transitions. [2023-11-29 01:49:10,730 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 329 transitions. Word has length 193 [2023-11-29 01:49:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:10,731 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 329 transitions. [2023-11-29 01:49:10,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:49:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 329 transitions. [2023-11-29 01:49:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:49:10,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:10,733 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:10,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 01:49:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:49:10,933 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:10,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2041340413, now seen corresponding path program 1 times [2023-11-29 01:49:10,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:10,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309406230] [2023-11-29 01:49:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:10,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:10,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:10,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146634143] [2023-11-29 01:49:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:10,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:10,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:10,949 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:10,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 01:49:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:11,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:49:11,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:49:15,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:49:15,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:15,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309406230] [2023-11-29 01:49:15,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:15,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146634143] [2023-11-29 01:49:15,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146634143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:15,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:15,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:49:15,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199789992] [2023-11-29 01:49:15,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:15,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:49:15,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:15,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:49:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:49:15,664 INFO L87 Difference]: Start difference. First operand 227 states and 329 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:49:16,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:16,774 INFO L93 Difference]: Finished difference Result 559 states and 797 transitions. [2023-11-29 01:49:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:49:16,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:49:16,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:16,777 INFO L225 Difference]: With dead ends: 559 [2023-11-29 01:49:16,777 INFO L226 Difference]: Without dead ends: 333 [2023-11-29 01:49:16,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:49:16,778 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 156 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:16,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 580 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:49:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-29 01:49:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 247. [2023-11-29 01:49:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.355191256830601) internal successors, (248), 186 states have internal predecessors, (248), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:49:16,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 356 transitions. [2023-11-29 01:49:16,836 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 356 transitions. Word has length 193 [2023-11-29 01:49:16,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:16,836 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 356 transitions. [2023-11-29 01:49:16,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:49:16,836 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 356 transitions. [2023-11-29 01:49:16,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:49:16,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:16,838 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:16,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 01:49:17,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:49:17,038 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:17,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:17,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1361282043, now seen corresponding path program 1 times [2023-11-29 01:49:17,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:17,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546157572] [2023-11-29 01:49:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:17,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:17,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:17,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230975689] [2023-11-29 01:49:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:17,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:17,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:17,052 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:17,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 01:49:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:17,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:49:17,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:49:20,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:49:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:20,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546157572] [2023-11-29 01:49:20,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:20,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230975689] [2023-11-29 01:49:20,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230975689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:20,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:20,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:49:20,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284037285] [2023-11-29 01:49:20,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:20,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:49:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:49:20,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:49:20,375 INFO L87 Difference]: Start difference. First operand 247 states and 356 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:49:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:21,440 INFO L93 Difference]: Finished difference Result 579 states and 818 transitions. [2023-11-29 01:49:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:49:21,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:49:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:21,442 INFO L225 Difference]: With dead ends: 579 [2023-11-29 01:49:21,442 INFO L226 Difference]: Without dead ends: 333 [2023-11-29 01:49:21,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:49:21,443 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 199 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:21,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 391 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:49:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-29 01:49:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 240. [2023-11-29 01:49:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 176 states have (on average 1.3522727272727273) internal successors, (238), 179 states have internal predecessors, (238), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:49:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 346 transitions. [2023-11-29 01:49:21,500 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 346 transitions. Word has length 193 [2023-11-29 01:49:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:21,500 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 346 transitions. [2023-11-29 01:49:21,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:49:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 346 transitions. [2023-11-29 01:49:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:49:21,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:21,501 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:21,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 01:49:21,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:49:21,702 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:21,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1867986045, now seen corresponding path program 1 times [2023-11-29 01:49:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815681383] [2023-11-29 01:49:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:21,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:21,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:21,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790764809] [2023-11-29 01:49:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:21,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:21,715 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:21,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 01:49:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:21,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 01:49:21,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1228 proven. 117 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-29 01:49:30,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:49:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:49:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815681383] [2023-11-29 01:49:38,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790764809] [2023-11-29 01:49:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790764809] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:49:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:49:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 25 [2023-11-29 01:49:38,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447030480] [2023-11-29 01:49:38,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:49:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:38,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:49:38,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:49:38,084 INFO L87 Difference]: Start difference. First operand 240 states and 346 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:49:50,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:49:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:50,550 INFO L93 Difference]: Finished difference Result 674 states and 929 transitions. [2023-11-29 01:49:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:49:50,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:49:50,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:50,553 INFO L225 Difference]: With dead ends: 674 [2023-11-29 01:49:50,554 INFO L226 Difference]: Without dead ends: 435 [2023-11-29 01:49:50,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=401, Invalid=1405, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:49:50,555 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 234 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:50,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 567 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 01:49:50,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-11-29 01:49:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 241. [2023-11-29 01:49:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 177 states have (on average 1.3559322033898304) internal successors, (240), 180 states have internal predecessors, (240), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:49:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 348 transitions. [2023-11-29 01:49:50,614 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 348 transitions. Word has length 193 [2023-11-29 01:49:50,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:50,614 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 348 transitions. [2023-11-29 01:49:50,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:49:50,614 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 348 transitions. [2023-11-29 01:49:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:49:50,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:50,615 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:50,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 01:49:50,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:50,816 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:50,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:50,816 INFO L85 PathProgramCache]: Analyzing trace with hash -171819428, now seen corresponding path program 1 times [2023-11-29 01:49:50,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:50,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587378368] [2023-11-29 01:49:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:50,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:50,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:50,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663769424] [2023-11-29 01:49:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:50,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:50,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:50,830 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:50,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 01:49:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:51,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:49:51,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:50:03,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:50:03,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:03,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587378368] [2023-11-29 01:50:03,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:50:03,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663769424] [2023-11-29 01:50:03,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663769424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:03,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:03,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:50:03,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012446116] [2023-11-29 01:50:03,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:03,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:50:03,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:03,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:50:03,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:50:03,799 INFO L87 Difference]: Start difference. First operand 241 states and 348 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:50:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:07,258 INFO L93 Difference]: Finished difference Result 604 states and 851 transitions. [2023-11-29 01:50:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:50:07,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:50:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:07,261 INFO L225 Difference]: With dead ends: 604 [2023-11-29 01:50:07,261 INFO L226 Difference]: Without dead ends: 364 [2023-11-29 01:50:07,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:50:07,262 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 171 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:07,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 407 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 01:50:07,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-29 01:50:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 240. [2023-11-29 01:50:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 176 states have (on average 1.3522727272727273) internal successors, (238), 179 states have internal predecessors, (238), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:50:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 346 transitions. [2023-11-29 01:50:07,322 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 346 transitions. Word has length 193 [2023-11-29 01:50:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:07,322 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 346 transitions. [2023-11-29 01:50:07,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:50:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 346 transitions. [2023-11-29 01:50:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:50:07,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:07,323 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:07,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 01:50:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 01:50:07,524 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:07,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1746922881, now seen corresponding path program 1 times [2023-11-29 01:50:07,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:07,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361166983] [2023-11-29 01:50:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:07,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:07,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:50:07,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284824552] [2023-11-29 01:50:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:07,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:50:07,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:50:07,541 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:50:07,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 01:50:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:07,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-29 01:50:07,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1329 proven. 330 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-29 01:50:29,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:50:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:50:47,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:47,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361166983] [2023-11-29 01:50:47,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:50:47,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284824552] [2023-11-29 01:50:47,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284824552] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:50:47,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:50:47,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [40] total 50 [2023-11-29 01:50:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803054083] [2023-11-29 01:50:47,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:47,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:50:47,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:47,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:50:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=1916, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 01:50:47,485 INFO L87 Difference]: Start difference. First operand 240 states and 346 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:50:58,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:58,291 INFO L93 Difference]: Finished difference Result 643 states and 896 transitions. [2023-11-29 01:50:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:50:58,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:50:58,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:58,294 INFO L225 Difference]: With dead ends: 643 [2023-11-29 01:50:58,294 INFO L226 Difference]: Without dead ends: 404 [2023-11-29 01:50:58,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=744, Invalid=3162, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 01:50:58,296 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 214 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:58,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 552 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 01:50:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-29 01:50:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 238. [2023-11-29 01:50:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 174 states have (on average 1.3563218390804597) internal successors, (236), 177 states have internal predecessors, (236), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:50:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 344 transitions. [2023-11-29 01:50:58,357 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 344 transitions. Word has length 193 [2023-11-29 01:50:58,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:58,357 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 344 transitions. [2023-11-29 01:50:58,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:50:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 344 transitions. [2023-11-29 01:50:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:50:58,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:58,358 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:58,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 01:50:58,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 01:50:58,559 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:58,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash 508238942, now seen corresponding path program 1 times [2023-11-29 01:50:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:58,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213376321] [2023-11-29 01:50:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:58,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:58,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:50:58,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969382933] [2023-11-29 01:50:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:58,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:50:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:50:58,576 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:50:58,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 01:50:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:58,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 01:50:58,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1177 proven. 285 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2023-11-29 01:51:19,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:51:29,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:29,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213376321] [2023-11-29 01:51:29,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:51:29,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969382933] [2023-11-29 01:51:29,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969382933] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:51:29,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:51:29,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [35] total 43 [2023-11-29 01:51:29,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928984327] [2023-11-29 01:51:29,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:51:29,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:51:29,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:29,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:51:29,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1405, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:51:29,041 INFO L87 Difference]: Start difference. First operand 238 states and 344 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:51:35,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:51:48,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:51:50,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:52:01,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 01:52:09,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:52:09,452 INFO L93 Difference]: Finished difference Result 713 states and 1002 transitions. [2023-11-29 01:52:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:52:09,453 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:52:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:52:09,455 INFO L225 Difference]: With dead ends: 713 [2023-11-29 01:52:09,455 INFO L226 Difference]: Without dead ends: 476 [2023-11-29 01:52:09,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=671, Invalid=3235, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 01:52:09,456 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 288 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:52:09,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 475 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 565 Invalid, 2 Unknown, 0 Unchecked, 19.1s Time] [2023-11-29 01:52:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-29 01:52:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 231. [2023-11-29 01:52:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 167 states have (on average 1.347305389221557) internal successors, (225), 170 states have internal predecessors, (225), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:52:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 333 transitions. [2023-11-29 01:52:09,523 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 333 transitions. Word has length 193 [2023-11-29 01:52:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:52:09,524 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 333 transitions. [2023-11-29 01:52:09,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 333 transitions. [2023-11-29 01:52:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:52:09,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:52:09,525 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:09,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 01:52:09,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 01:52:09,726 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:52:09,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1783174975, now seen corresponding path program 1 times [2023-11-29 01:52:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:09,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251247435] [2023-11-29 01:52:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:09,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:09,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:09,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452065571] [2023-11-29 01:52:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:09,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:09,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:09,744 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:09,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 01:52:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:52:09,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:52:09,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:52:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:52:15,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:52:15,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:52:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251247435] [2023-11-29 01:52:15,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:52:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452065571] [2023-11-29 01:52:15,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452065571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:52:15,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:52:15,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:52:15,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842627614] [2023-11-29 01:52:15,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:52:15,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:52:15,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:52:15,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:52:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:52:15,977 INFO L87 Difference]: Start difference. First operand 231 states and 333 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:52:17,149 INFO L93 Difference]: Finished difference Result 550 states and 778 transitions. [2023-11-29 01:52:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:52:17,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:52:17,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:52:17,152 INFO L225 Difference]: With dead ends: 550 [2023-11-29 01:52:17,152 INFO L226 Difference]: Without dead ends: 320 [2023-11-29 01:52:17,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:52:17,153 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 152 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:52:17,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 440 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:52:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-29 01:52:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 227. [2023-11-29 01:52:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 163 states have (on average 1.3312883435582823) internal successors, (217), 166 states have internal predecessors, (217), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:52:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 325 transitions. [2023-11-29 01:52:17,213 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 325 transitions. Word has length 193 [2023-11-29 01:52:17,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:52:17,213 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 325 transitions. [2023-11-29 01:52:17,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 325 transitions. [2023-11-29 01:52:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:52:17,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:52:17,214 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:17,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 01:52:17,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:17,415 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:52:17,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1103116605, now seen corresponding path program 1 times [2023-11-29 01:52:17,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:17,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641660101] [2023-11-29 01:52:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:17,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:17,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:17,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597125051] [2023-11-29 01:52:17,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:17,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:17,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:17,428 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:17,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 01:52:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:52:17,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:52:17,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:52:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:52:21,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:52:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:52:21,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641660101] [2023-11-29 01:52:21,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:52:21,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597125051] [2023-11-29 01:52:21,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597125051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:52:21,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:52:21,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:52:21,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816083200] [2023-11-29 01:52:21,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:52:21,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:52:21,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:52:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:52:21,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:52:21,089 INFO L87 Difference]: Start difference. First operand 227 states and 325 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:52:22,168 INFO L93 Difference]: Finished difference Result 546 states and 764 transitions. [2023-11-29 01:52:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:52:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 193 [2023-11-29 01:52:22,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:52:22,170 INFO L225 Difference]: With dead ends: 546 [2023-11-29 01:52:22,170 INFO L226 Difference]: Without dead ends: 320 [2023-11-29 01:52:22,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:52:22,171 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 141 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:52:22,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 458 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:52:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-29 01:52:22,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 213. [2023-11-29 01:52:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 149 states have (on average 1.3154362416107384) internal successors, (196), 152 states have internal predecessors, (196), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:52:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 304 transitions. [2023-11-29 01:52:22,233 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 304 transitions. Word has length 193 [2023-11-29 01:52:22,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:52:22,234 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 304 transitions. [2023-11-29 01:52:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 304 transitions. [2023-11-29 01:52:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 01:52:22,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:52:22,235 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:22,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 01:52:22,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:22,435 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:52:22,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash 119486778, now seen corresponding path program 1 times [2023-11-29 01:52:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:22,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352818228] [2023-11-29 01:52:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:22,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:22,448 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:22,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729330595] [2023-11-29 01:52:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:22,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:22,449 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:22,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 01:52:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:52:22,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:52:22,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:52:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:52:33,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:52:33,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:52:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352818228] [2023-11-29 01:52:33,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:52:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729330595] [2023-11-29 01:52:33,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729330595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:52:33,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:52:33,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:52:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764794190] [2023-11-29 01:52:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:52:33,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:52:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:52:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:52:33,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:52:33,784 INFO L87 Difference]: Start difference. First operand 213 states and 304 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:52:34,321 INFO L93 Difference]: Finished difference Result 286 states and 394 transitions. [2023-11-29 01:52:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:52:34,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 01:52:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:52:34,323 INFO L225 Difference]: With dead ends: 286 [2023-11-29 01:52:34,323 INFO L226 Difference]: Without dead ends: 284 [2023-11-29 01:52:34,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:52:34,324 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 130 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:52:34,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 552 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:52:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-29 01:52:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 224. [2023-11-29 01:52:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 160 states have (on average 1.3) internal successors, (208), 163 states have internal predecessors, (208), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:52:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 316 transitions. [2023-11-29 01:52:34,397 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 316 transitions. Word has length 194 [2023-11-29 01:52:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:52:34,397 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 316 transitions. [2023-11-29 01:52:34,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 316 transitions. [2023-11-29 01:52:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-29 01:52:34,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:52:34,398 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:34,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 01:52:34,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:34,599 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:52:34,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:34,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1628485799, now seen corresponding path program 1 times [2023-11-29 01:52:34,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:34,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253914468] [2023-11-29 01:52:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:34,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:34,613 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:34,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949523800] [2023-11-29 01:52:34,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:34,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:34,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:34,615 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:34,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 01:52:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:52:34,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:52:34,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:52:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:52:34,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:52:34,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:52:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253914468] [2023-11-29 01:52:34,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:52:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949523800] [2023-11-29 01:52:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949523800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:52:34,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:52:34,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:52:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877584084] [2023-11-29 01:52:34,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:52:34,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:52:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:52:34,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:52:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:52:34,752 INFO L87 Difference]: Start difference. First operand 224 states and 316 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:52:35,037 INFO L93 Difference]: Finished difference Result 476 states and 665 transitions. [2023-11-29 01:52:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:52:35,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 194 [2023-11-29 01:52:35,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:52:35,040 INFO L225 Difference]: With dead ends: 476 [2023-11-29 01:52:35,040 INFO L226 Difference]: Without dead ends: 253 [2023-11-29 01:52:35,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 192 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 01:52:35,041 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:52:35,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 210 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:52:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-29 01:52:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 234. [2023-11-29 01:52:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 170 states have (on average 1.276470588235294) internal successors, (217), 173 states have internal predecessors, (217), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:52:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 325 transitions. [2023-11-29 01:52:35,106 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 325 transitions. Word has length 194 [2023-11-29 01:52:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:52:35,106 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 325 transitions. [2023-11-29 01:52:35,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 325 transitions. [2023-11-29 01:52:35,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 01:52:35,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:52:35,107 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:35,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 01:52:35,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 01:52:35,308 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:52:35,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:35,309 INFO L85 PathProgramCache]: Analyzing trace with hash -540262180, now seen corresponding path program 1 times [2023-11-29 01:52:35,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:35,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219529209] [2023-11-29 01:52:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:35,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:35,322 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:35,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834779720] [2023-11-29 01:52:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:35,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:35,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:35,324 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:35,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 01:52:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:52:35,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:52:35,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:52:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:52:35,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:52:35,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:52:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219529209] [2023-11-29 01:52:35,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:52:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834779720] [2023-11-29 01:52:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834779720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:52:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:52:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:52:35,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408981326] [2023-11-29 01:52:35,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:52:35,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:52:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:52:35,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:52:35,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:52:35,466 INFO L87 Difference]: Start difference. First operand 234 states and 325 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:35,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:52:35,694 INFO L93 Difference]: Finished difference Result 486 states and 670 transitions. [2023-11-29 01:52:35,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:52:35,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 195 [2023-11-29 01:52:35,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:52:35,696 INFO L225 Difference]: With dead ends: 486 [2023-11-29 01:52:35,696 INFO L226 Difference]: Without dead ends: 253 [2023-11-29 01:52:35,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 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 01:52:35,697 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 8 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:52:35,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 209 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:52:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-29 01:52:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 234. [2023-11-29 01:52:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 170 states have (on average 1.2470588235294118) internal successors, (212), 173 states have internal predecessors, (212), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:52:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 320 transitions. [2023-11-29 01:52:35,759 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 320 transitions. Word has length 195 [2023-11-29 01:52:35,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:52:35,759 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 320 transitions. [2023-11-29 01:52:35,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 320 transitions. [2023-11-29 01:52:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 01:52:35,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:52:35,760 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:35,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 01:52:35,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 01:52:35,962 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:52:35,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1107162781, now seen corresponding path program 1 times [2023-11-29 01:52:35,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:35,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206078259] [2023-11-29 01:52:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:35,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:35,978 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:35,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086488996] [2023-11-29 01:52:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:35,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:35,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:35,980 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:35,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 01:52:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:52:36,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:52:36,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:52:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-29 01:52:36,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:52:36,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:52:36,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206078259] [2023-11-29 01:52:36,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:52:36,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086488996] [2023-11-29 01:52:36,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086488996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:52:36,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:52:36,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:52:36,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925010888] [2023-11-29 01:52:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:52:36,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:52:36,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:52:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:52:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:52:36,091 INFO L87 Difference]: Start difference. First operand 234 states and 320 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:52:36,304 INFO L93 Difference]: Finished difference Result 510 states and 690 transitions. [2023-11-29 01:52:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:52:36,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 195 [2023-11-29 01:52:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:52:36,307 INFO L225 Difference]: With dead ends: 510 [2023-11-29 01:52:36,307 INFO L226 Difference]: Without dead ends: 277 [2023-11-29 01:52:36,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 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 01:52:36,308 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 10 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:52:36,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 212 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:52:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-29 01:52:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 255. [2023-11-29 01:52:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 191 states have (on average 1.225130890052356) internal successors, (234), 194 states have internal predecessors, (234), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-29 01:52:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 342 transitions. [2023-11-29 01:52:36,379 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 342 transitions. Word has length 195 [2023-11-29 01:52:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:52:36,379 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 342 transitions. [2023-11-29 01:52:36,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-29 01:52:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 342 transitions. [2023-11-29 01:52:36,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 01:52:36,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:52:36,381 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:36,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-29 01:52:36,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 01:52:36,582 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:52:36,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:36,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1109009823, now seen corresponding path program 1 times [2023-11-29 01:52:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:36,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742568947] [2023-11-29 01:52:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:36,594 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:36,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683841815] [2023-11-29 01:52:36,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:36,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:36,595 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:36,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c326d0-f405-4bed-99fb-b22d64f8d13b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 01:52:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:52:36,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:52:36,692 INFO L285 TraceCheckSpWp]: Computing forward predicates...