./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-27.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/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_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-27.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/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_c8b71729-4ae6-49c3-8607-a81134fc261c/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 5acf4253b443244094cfe64cde0a882806db433781b0bda7a83218841032b1a3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:11:22,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:11:22,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:11:22,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:11:22,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:11:22,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:11:22,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:11:22,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:11:22,625 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:11:22,625 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:11:22,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:11:22,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:11:22,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:11:22,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:11:22,628 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:11:22,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:11:22,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:11:22,630 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:11:22,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:11:22,631 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:11:22,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:11:22,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:11:22,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:11:22,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:11:22,633 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:11:22,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:11:22,634 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:11:22,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:11:22,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:11:22,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:11:22,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:11:22,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:11:22,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:11:22,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:11:22,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:11:22,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:11:22,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:11:22,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:11:22,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:11:22,638 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:11:22,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:11:22,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:11:22,639 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_c8b71729-4ae6-49c3-8607-a81134fc261c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5acf4253b443244094cfe64cde0a882806db433781b0bda7a83218841032b1a3 [2023-11-29 06:11:22,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:11:22,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:11:22,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:11:22,898 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:11:22,899 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:11:22,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-27.i [2023-11-29 06:11:25,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:11:25,897 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:11:25,897 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-27.i [2023-11-29 06:11:25,913 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/data/a0c206ca6/3b25e18910994f4b9011b5e3bc5f0028/FLAG796245263 [2023-11-29 06:11:25,928 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/data/a0c206ca6/3b25e18910994f4b9011b5e3bc5f0028 [2023-11-29 06:11:25,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:11:25,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:11:25,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:11:25,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:11:25,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:11:25,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:11:25" (1/1) ... [2023-11-29 06:11:25,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b553871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:25, skipping insertion in model container [2023-11-29 06:11:25,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:11:25" (1/1) ... [2023-11-29 06:11:26,003 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:11:26,172 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_c8b71729-4ae6-49c3-8607-a81134fc261c/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-27.i[916,929] [2023-11-29 06:11:26,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:11:26,408 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:11:26,420 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_c8b71729-4ae6-49c3-8607-a81134fc261c/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-27.i[916,929] [2023-11-29 06:11:26,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:11:26,569 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:11:26,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26 WrapperNode [2023-11-29 06:11:26,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:11:26,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:11:26,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:11:26,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:11:26,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,683 INFO L138 Inliner]: procedures = 26, calls = 103, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 732 [2023-11-29 06:11:26,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:11:26,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:11:26,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:11:26,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:11:26,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,707 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,747 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 06:11:26,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,810 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:11:26,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:11:26,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:11:26,811 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:11:26,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (1/1) ... [2023-11-29 06:11:26,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:11:26,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:26,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:11:26,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:11:26,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:11:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:11:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:11:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:11:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:11:26,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:11:27,063 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:11:27,065 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:11:27,987 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:11:28,066 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:11:28,066 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:11:28,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:11:28 BoogieIcfgContainer [2023-11-29 06:11:28,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:11:28,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:11:28,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:11:28,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:11:28,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:11:25" (1/3) ... [2023-11-29 06:11:28,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d20ce4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:11:28, skipping insertion in model container [2023-11-29 06:11:28,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:11:26" (2/3) ... [2023-11-29 06:11:28,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d20ce4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:11:28, skipping insertion in model container [2023-11-29 06:11:28,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:11:28" (3/3) ... [2023-11-29 06:11:28,075 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-27.i [2023-11-29 06:11:28,093 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:11:28,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:11:28,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:11:28,145 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;@5836df81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:11:28,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:11:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 188 states have (on average 1.547872340425532) internal successors, (291), 189 states have internal predecessors, (291), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 06:11:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-29 06:11:28,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:28,185 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:28,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:28,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:28,191 INFO L85 PathProgramCache]: Analyzing trace with hash 626842740, now seen corresponding path program 1 times [2023-11-29 06:11:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474743449] [2023-11-29 06:11:28,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:28,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:28,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474743449] [2023-11-29 06:11:28,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 06:11:28,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871364594] [2023-11-29 06:11:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:28,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:28,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:28,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:28,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:11:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:29,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:11:29,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 15842 trivial. 0 not checked. [2023-11-29 06:11:29,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:11:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871364594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:11:29,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:11:29,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:11:29,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306107356] [2023-11-29 06:11:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:11:29,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:11:29,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:29,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:11:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:11:29,217 INFO L87 Difference]: Start difference. First operand has 281 states, 188 states have (on average 1.547872340425532) internal successors, (291), 189 states have internal predecessors, (291), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) [2023-11-29 06:11:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:29,313 INFO L93 Difference]: Finished difference Result 559 states and 1030 transitions. [2023-11-29 06:11:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:11:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) Word has length 585 [2023-11-29 06:11:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:29,329 INFO L225 Difference]: With dead ends: 559 [2023-11-29 06:11:29,330 INFO L226 Difference]: Without dead ends: 279 [2023-11-29 06:11:29,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 584 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 06:11:29,340 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:29,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 463 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:11:29,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-29 06:11:29,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-11-29 06:11:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 187 states have (on average 1.5294117647058822) internal successors, (286), 187 states have internal predecessors, (286), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 06:11:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 466 transitions. [2023-11-29 06:11:29,429 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 466 transitions. Word has length 585 [2023-11-29 06:11:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:29,430 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 466 transitions. [2023-11-29 06:11:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) [2023-11-29 06:11:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 466 transitions. [2023-11-29 06:11:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-29 06:11:29,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:29,451 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:29,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:11:29,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:11:29,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:29,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:29,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1449061948, now seen corresponding path program 1 times [2023-11-29 06:11:29,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:29,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892316777] [2023-11-29 06:11:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:29,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:29,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:29,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580296586] [2023-11-29 06:11:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:29,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:29,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:29,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:29,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:11:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:30,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:11:30,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-11-29 06:11:30,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:11:30,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:30,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892316777] [2023-11-29 06:11:30,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:30,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580296586] [2023-11-29 06:11:30,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580296586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:11:30,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:11:30,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:11:30,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427931927] [2023-11-29 06:11:30,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:11:30,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:11:30,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:11:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:11:30,428 INFO L87 Difference]: Start difference. First operand 279 states and 466 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:30,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:30,643 INFO L93 Difference]: Finished difference Result 829 states and 1385 transitions. [2023-11-29 06:11:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:11:30,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 585 [2023-11-29 06:11:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:30,654 INFO L225 Difference]: With dead ends: 829 [2023-11-29 06:11:30,654 INFO L226 Difference]: Without dead ends: 551 [2023-11-29 06:11:30,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 583 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 06:11:30,657 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 440 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:30,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1035 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:11:30,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-29 06:11:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 316. [2023-11-29 06:11:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 224 states have (on average 1.5669642857142858) internal successors, (351), 224 states have internal predecessors, (351), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-29 06:11:30,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 531 transitions. [2023-11-29 06:11:30,717 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 531 transitions. Word has length 585 [2023-11-29 06:11:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:30,720 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 531 transitions. [2023-11-29 06:11:30,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:30,721 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 531 transitions. [2023-11-29 06:11:30,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2023-11-29 06:11:30,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:30,728 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:30,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:11:30,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 06:11:30,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:30,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:30,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1408387198, now seen corresponding path program 1 times [2023-11-29 06:11:30,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:30,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442852323] [2023-11-29 06:11:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:30,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:31,037 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:31,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036529214] [2023-11-29 06:11:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:31,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:31,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:31,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:31,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:11:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:31,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:11:31,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-11-29 06:11:31,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:11:31,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:31,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442852323] [2023-11-29 06:11:31,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:31,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036529214] [2023-11-29 06:11:31,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036529214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:11:31,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:11:31,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:11:31,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008598765] [2023-11-29 06:11:31,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:11:31,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:11:31,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:31,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:11:31,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:11:31,600 INFO L87 Difference]: Start difference. First operand 316 states and 531 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:31,758 INFO L93 Difference]: Finished difference Result 811 states and 1366 transitions. [2023-11-29 06:11:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:11:31,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 585 [2023-11-29 06:11:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:31,766 INFO L225 Difference]: With dead ends: 811 [2023-11-29 06:11:31,766 INFO L226 Difference]: Without dead ends: 496 [2023-11-29 06:11:31,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 583 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 06:11:31,768 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 228 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:31,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 964 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:11:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-29 06:11:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 493. [2023-11-29 06:11:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 372 states have (on average 1.5887096774193548) internal successors, (591), 373 states have internal predecessors, (591), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-29 06:11:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 827 transitions. [2023-11-29 06:11:31,817 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 827 transitions. Word has length 585 [2023-11-29 06:11:31,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:31,819 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 827 transitions. [2023-11-29 06:11:31,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 827 transitions. [2023-11-29 06:11:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-11-29 06:11:31,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:31,827 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:31,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:11:32,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:32,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:32,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:32,028 INFO L85 PathProgramCache]: Analyzing trace with hash 592604028, now seen corresponding path program 1 times [2023-11-29 06:11:32,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:32,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933248544] [2023-11-29 06:11:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:32,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:32,112 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:32,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944150036] [2023-11-29 06:11:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:32,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:32,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:32,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:32,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:11:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:32,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:11:32,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8009 proven. 147 refuted. 0 times theorem prover too weak. 7864 trivial. 0 not checked. [2023-11-29 06:11:34,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:11:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 120 proven. 147 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-11-29 06:11:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933248544] [2023-11-29 06:11:34,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944150036] [2023-11-29 06:11:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944150036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:11:34,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:11:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 06:11:34,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271608761] [2023-11-29 06:11:34,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:11:34,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:11:34,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:34,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:11:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:11:34,829 INFO L87 Difference]: Start difference. First operand 493 states and 827 transitions. Second operand has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) [2023-11-29 06:11:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:36,886 INFO L93 Difference]: Finished difference Result 1797 states and 3032 transitions. [2023-11-29 06:11:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:11:36,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) Word has length 586 [2023-11-29 06:11:36,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:36,900 INFO L225 Difference]: With dead ends: 1797 [2023-11-29 06:11:36,900 INFO L226 Difference]: Without dead ends: 1305 [2023-11-29 06:11:36,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:11:36,904 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 2092 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:36,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 2982 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 06:11:36,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-11-29 06:11:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 860. [2023-11-29 06:11:37,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 647 states have (on average 1.5842349304482226) internal successors, (1025), 648 states have internal predecessors, (1025), 208 states have call successors, (208), 4 states have call predecessors, (208), 4 states have return successors, (208), 207 states have call predecessors, (208), 208 states have call successors, (208) [2023-11-29 06:11:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1441 transitions. [2023-11-29 06:11:37,037 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1441 transitions. Word has length 586 [2023-11-29 06:11:37,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:37,038 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1441 transitions. [2023-11-29 06:11:37,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.857142857142858) internal successors, (208), 14 states have internal predecessors, (208), 4 states have call successors, (180), 3 states have call predecessors, (180), 5 states have return successors, (180), 4 states have call predecessors, (180), 4 states have call successors, (180) [2023-11-29 06:11:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1441 transitions. [2023-11-29 06:11:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2023-11-29 06:11:37,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:37,045 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:37,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:11:37,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:37,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:37,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1518760190, now seen corresponding path program 1 times [2023-11-29 06:11:37,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:37,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808411504] [2023-11-29 06:11:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:37,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:37,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:37,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827421877] [2023-11-29 06:11:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:37,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:37,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:37,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:37,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:11:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:37,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:11:37,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7107 proven. 180 refuted. 0 times theorem prover too weak. 8733 trivial. 0 not checked. [2023-11-29 06:11:38,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:11:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 87 proven. 180 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-11-29 06:11:38,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:38,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808411504] [2023-11-29 06:11:38,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:38,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827421877] [2023-11-29 06:11:38,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827421877] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:11:38,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:11:38,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 06:11:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316265365] [2023-11-29 06:11:38,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:11:38,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:11:38,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:38,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:11:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:11:38,579 INFO L87 Difference]: Start difference. First operand 860 states and 1441 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-11-29 06:11:39,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:39,166 INFO L93 Difference]: Finished difference Result 1187 states and 1977 transitions. [2023-11-29 06:11:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:11:39,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) Word has length 586 [2023-11-29 06:11:39,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:39,173 INFO L225 Difference]: With dead ends: 1187 [2023-11-29 06:11:39,173 INFO L226 Difference]: Without dead ends: 598 [2023-11-29 06:11:39,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1164 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:11:39,176 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 677 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:39,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 864 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:11:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-11-29 06:11:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 590. [2023-11-29 06:11:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 404 states have (on average 1.4876237623762376) internal successors, (601), 404 states have internal predecessors, (601), 180 states have call successors, (180), 5 states have call predecessors, (180), 5 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2023-11-29 06:11:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 961 transitions. [2023-11-29 06:11:39,255 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 961 transitions. Word has length 586 [2023-11-29 06:11:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:39,257 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 961 transitions. [2023-11-29 06:11:39,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2023-11-29 06:11:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 961 transitions. [2023-11-29 06:11:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2023-11-29 06:11:39,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:39,263 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:39,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:11:39,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:39,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:39,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:39,465 INFO L85 PathProgramCache]: Analyzing trace with hash -84965343, now seen corresponding path program 1 times [2023-11-29 06:11:39,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:39,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603771251] [2023-11-29 06:11:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:39,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:39,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:39,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742701431] [2023-11-29 06:11:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:39,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:39,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:39,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:39,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:11:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:39,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:11:39,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-11-29 06:11:40,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:11:40,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:40,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603771251] [2023-11-29 06:11:40,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:40,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742701431] [2023-11-29 06:11:40,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742701431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:11:40,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:11:40,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:11:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983777939] [2023-11-29 06:11:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:11:40,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:11:40,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:40,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:11:40,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:11:40,065 INFO L87 Difference]: Start difference. First operand 590 states and 961 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:40,635 INFO L93 Difference]: Finished difference Result 1729 states and 2852 transitions. [2023-11-29 06:11:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:11:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 587 [2023-11-29 06:11:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:40,647 INFO L225 Difference]: With dead ends: 1729 [2023-11-29 06:11:40,647 INFO L226 Difference]: Without dead ends: 1414 [2023-11-29 06:11:40,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:11:40,650 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 753 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:40,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1454 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:11:40,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2023-11-29 06:11:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1146. [2023-11-29 06:11:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 933 states have (on average 1.6055734190782422) internal successors, (1498), 934 states have internal predecessors, (1498), 206 states have call successors, (206), 6 states have call predecessors, (206), 6 states have return successors, (206), 205 states have call predecessors, (206), 206 states have call successors, (206) [2023-11-29 06:11:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1910 transitions. [2023-11-29 06:11:40,790 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1910 transitions. Word has length 587 [2023-11-29 06:11:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:40,791 INFO L495 AbstractCegarLoop]: Abstraction has 1146 states and 1910 transitions. [2023-11-29 06:11:40,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1910 transitions. [2023-11-29 06:11:40,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2023-11-29 06:11:40,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:40,798 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:40,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:11:40,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:40,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:40,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1145974303, now seen corresponding path program 1 times [2023-11-29 06:11:40,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:40,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160293401] [2023-11-29 06:11:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:41,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:41,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:41,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311808754] [2023-11-29 06:11:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:41,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:41,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:41,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:41,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:11:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:41,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:11:41,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-11-29 06:11:42,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:11:42,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:42,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160293401] [2023-11-29 06:11:42,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311808754] [2023-11-29 06:11:42,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311808754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:11:42,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:11:42,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:11:42,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757680747] [2023-11-29 06:11:42,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:11:42,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:11:42,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:11:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:11:42,110 INFO L87 Difference]: Start difference. First operand 1146 states and 1910 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:43,691 INFO L93 Difference]: Finished difference Result 4516 states and 7525 transitions. [2023-11-29 06:11:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:11:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 587 [2023-11-29 06:11:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:43,710 INFO L225 Difference]: With dead ends: 4516 [2023-11-29 06:11:43,710 INFO L226 Difference]: Without dead ends: 3536 [2023-11-29 06:11:43,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:11:43,714 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 1900 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:43,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 3014 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:11:43,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2023-11-29 06:11:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 3356. [2023-11-29 06:11:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 2781 states have (on average 1.5969075871988494) internal successors, (4441), 2785 states have internal predecessors, (4441), 554 states have call successors, (554), 20 states have call predecessors, (554), 20 states have return successors, (554), 550 states have call predecessors, (554), 554 states have call successors, (554) [2023-11-29 06:11:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 5549 transitions. [2023-11-29 06:11:43,972 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 5549 transitions. Word has length 587 [2023-11-29 06:11:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:43,973 INFO L495 AbstractCegarLoop]: Abstraction has 3356 states and 5549 transitions. [2023-11-29 06:11:43,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 5549 transitions. [2023-11-29 06:11:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2023-11-29 06:11:43,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:43,979 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:43,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:11:44,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:44,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:44,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:44,181 INFO L85 PathProgramCache]: Analyzing trace with hash -702073629, now seen corresponding path program 1 times [2023-11-29 06:11:44,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:44,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703507453] [2023-11-29 06:11:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:44,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:44,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013803129] [2023-11-29 06:11:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:44,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:44,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:44,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:44,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:11:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:44,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:11:44,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2023-11-29 06:11:44,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:11:44,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:44,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703507453] [2023-11-29 06:11:44,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:44,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013803129] [2023-11-29 06:11:44,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013803129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:11:44,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:11:44,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:11:44,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957099479] [2023-11-29 06:11:44,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:11:44,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:11:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:44,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:11:44,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:11:44,749 INFO L87 Difference]: Start difference. First operand 3356 states and 5549 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:45,721 INFO L93 Difference]: Finished difference Result 10368 states and 17305 transitions. [2023-11-29 06:11:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:11:45,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 587 [2023-11-29 06:11:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:45,772 INFO L225 Difference]: With dead ends: 10368 [2023-11-29 06:11:45,772 INFO L226 Difference]: Without dead ends: 7362 [2023-11-29 06:11:45,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:11:45,782 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 933 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:45,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 1684 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:11:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2023-11-29 06:11:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 2586. [2023-11-29 06:11:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2251 states have (on average 1.6077298978231898) internal successors, (3619), 2253 states have internal predecessors, (3619), 322 states have call successors, (322), 12 states have call predecessors, (322), 12 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-11-29 06:11:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 4263 transitions. [2023-11-29 06:11:46,179 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 4263 transitions. Word has length 587 [2023-11-29 06:11:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:46,180 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 4263 transitions. [2023-11-29 06:11:46,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2023-11-29 06:11:46,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 4263 transitions. [2023-11-29 06:11:46,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2023-11-29 06:11:46,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:46,187 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:46,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:11:46,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 06:11:46,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:46,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash 684711781, now seen corresponding path program 1 times [2023-11-29 06:11:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131844240] [2023-11-29 06:11:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:46,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:46,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961775545] [2023-11-29 06:11:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:46,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:46,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:46,457 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:46,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:11:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:46,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:11:46,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7043 proven. 84 refuted. 0 times theorem prover too weak. 8893 trivial. 0 not checked. [2023-11-29 06:11:47,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:11:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 183 proven. 84 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-11-29 06:11:47,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:47,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131844240] [2023-11-29 06:11:47,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:47,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961775545] [2023-11-29 06:11:47,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961775545] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:11:47,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:11:47,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 06:11:47,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357457556] [2023-11-29 06:11:47,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:11:47,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:11:47,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:11:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:11:47,494 INFO L87 Difference]: Start difference. First operand 2586 states and 4263 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-11-29 06:11:48,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:48,062 INFO L93 Difference]: Finished difference Result 4258 states and 6999 transitions. [2023-11-29 06:11:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:11:48,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 587 [2023-11-29 06:11:48,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:48,073 INFO L225 Difference]: With dead ends: 4258 [2023-11-29 06:11:48,073 INFO L226 Difference]: Without dead ends: 1972 [2023-11-29 06:11:48,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1166 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:11:48,077 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 289 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:48,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 876 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:11:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2023-11-29 06:11:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1922. [2023-11-29 06:11:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1584 states have (on average 1.5656565656565657) internal successors, (2480), 1586 states have internal predecessors, (2480), 322 states have call successors, (322), 15 states have call predecessors, (322), 15 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-11-29 06:11:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 3124 transitions. [2023-11-29 06:11:48,315 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 3124 transitions. Word has length 587 [2023-11-29 06:11:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:48,316 INFO L495 AbstractCegarLoop]: Abstraction has 1922 states and 3124 transitions. [2023-11-29 06:11:48,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-11-29 06:11:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 3124 transitions. [2023-11-29 06:11:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2023-11-29 06:11:48,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:48,323 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:48,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:11:48,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 06:11:48,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:48,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1564205214, now seen corresponding path program 1 times [2023-11-29 06:11:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:48,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649942797] [2023-11-29 06:11:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:48,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:48,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:48,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894003814] [2023-11-29 06:11:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:48,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:48,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:48,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:48,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:11:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:49,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:11:49,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7449 proven. 171 refuted. 0 times theorem prover too weak. 8400 trivial. 0 not checked. [2023-11-29 06:11:49,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:11:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 96 proven. 171 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-11-29 06:11:50,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:50,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649942797] [2023-11-29 06:11:50,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:50,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894003814] [2023-11-29 06:11:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894003814] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:11:50,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:11:50,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2023-11-29 06:11:50,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610704073] [2023-11-29 06:11:50,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:11:50,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:11:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:50,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:11:50,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:11:50,043 INFO L87 Difference]: Start difference. First operand 1922 states and 3124 transitions. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-11-29 06:11:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:51,277 INFO L93 Difference]: Finished difference Result 3270 states and 5308 transitions. [2023-11-29 06:11:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:11:51,278 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 588 [2023-11-29 06:11:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:51,288 INFO L225 Difference]: With dead ends: 3270 [2023-11-29 06:11:51,288 INFO L226 Difference]: Without dead ends: 1618 [2023-11-29 06:11:51,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1186 GetRequests, 1166 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:11:51,291 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 687 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:51,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1381 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:11:51,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2023-11-29 06:11:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1500. [2023-11-29 06:11:51,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1159 states have (on average 1.5142364106988784) internal successors, (1755), 1161 states have internal predecessors, (1755), 322 states have call successors, (322), 18 states have call predecessors, (322), 18 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-11-29 06:11:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2399 transitions. [2023-11-29 06:11:51,437 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2399 transitions. Word has length 588 [2023-11-29 06:11:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:51,438 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 2399 transitions. [2023-11-29 06:11:51,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 2 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-11-29 06:11:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2399 transitions. [2023-11-29 06:11:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-11-29 06:11:51,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:51,443 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:51,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:11:51,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:11:51,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:51,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:51,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1748307569, now seen corresponding path program 1 times [2023-11-29 06:11:51,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:51,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548870953] [2023-11-29 06:11:51,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:51,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:51,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:51,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484040841] [2023-11-29 06:11:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:51,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:51,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:51,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:51,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:11:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:52,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:11:52,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 3939 proven. 36 refuted. 0 times theorem prover too weak. 12045 trivial. 0 not checked. [2023-11-29 06:11:52,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:11:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 231 proven. 36 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-11-29 06:11:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548870953] [2023-11-29 06:11:52,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484040841] [2023-11-29 06:11:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484040841] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:11:52,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:11:52,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2023-11-29 06:11:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239421426] [2023-11-29 06:11:52,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:11:52,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:11:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:11:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:11:52,759 INFO L87 Difference]: Start difference. First operand 1500 states and 2399 transitions. Second operand has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-11-29 06:11:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:11:53,826 INFO L93 Difference]: Finished difference Result 2808 states and 4487 transitions. [2023-11-29 06:11:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:11:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 589 [2023-11-29 06:11:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:11:53,837 INFO L225 Difference]: With dead ends: 2808 [2023-11-29 06:11:53,837 INFO L226 Difference]: Without dead ends: 1534 [2023-11-29 06:11:53,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1168 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:11:53,840 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 704 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:11:53,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1133 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:11:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2023-11-29 06:11:53,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1512. [2023-11-29 06:11:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1168 states have (on average 1.4982876712328768) internal successors, (1750), 1170 states have internal predecessors, (1750), 322 states have call successors, (322), 21 states have call predecessors, (322), 21 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-11-29 06:11:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2394 transitions. [2023-11-29 06:11:53,991 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2394 transitions. Word has length 589 [2023-11-29 06:11:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:11:53,992 INFO L495 AbstractCegarLoop]: Abstraction has 1512 states and 2394 transitions. [2023-11-29 06:11:53,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 2 states have call successors, (102), 2 states have call predecessors, (102), 4 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2023-11-29 06:11:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2394 transitions. [2023-11-29 06:11:53,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-11-29 06:11:53,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:11:53,997 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:54,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 06:11:54,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:54,198 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:11:54,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:11:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1284930993, now seen corresponding path program 1 times [2023-11-29 06:11:54,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:11:54,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187851736] [2023-11-29 06:11:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:54,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:11:54,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:11:54,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738859710] [2023-11-29 06:11:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:11:54,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:11:54,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:11:54,265 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:11:54,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:11:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:11:54,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:11:54,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:11:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 9808 proven. 492 refuted. 0 times theorem prover too weak. 5720 trivial. 0 not checked. [2023-11-29 06:11:57,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:11:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 258 proven. 273 refuted. 0 times theorem prover too weak. 15489 trivial. 0 not checked. [2023-11-29 06:11:59,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:11:59,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187851736] [2023-11-29 06:11:59,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:11:59,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738859710] [2023-11-29 06:11:59,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738859710] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:11:59,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:11:59,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-11-29 06:11:59,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308672869] [2023-11-29 06:11:59,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:11:59,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:11:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:11:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:11:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:11:59,749 INFO L87 Difference]: Start difference. First operand 1512 states and 2394 transitions. Second operand has 19 states, 19 states have (on average 14.789473684210526) internal successors, (281), 19 states have internal predecessors, (281), 8 states have call successors, (166), 5 states have call predecessors, (166), 9 states have return successors, (167), 8 states have call predecessors, (167), 8 states have call successors, (167) [2023-11-29 06:12:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:12:01,054 INFO L93 Difference]: Finished difference Result 2734 states and 4254 transitions. [2023-11-29 06:12:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 06:12:01,055 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.789473684210526) internal successors, (281), 19 states have internal predecessors, (281), 8 states have call successors, (166), 5 states have call predecessors, (166), 9 states have return successors, (167), 8 states have call predecessors, (167), 8 states have call successors, (167) Word has length 589 [2023-11-29 06:12:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:12:01,065 INFO L225 Difference]: With dead ends: 2734 [2023-11-29 06:12:01,065 INFO L226 Difference]: Without dead ends: 1624 [2023-11-29 06:12:01,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=363, Invalid=759, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 06:12:01,068 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 373 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:12:01,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1253 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:12:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2023-11-29 06:12:01,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1596. [2023-11-29 06:12:01,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1231 states have (on average 1.4662875710804224) internal successors, (1805), 1233 states have internal predecessors, (1805), 322 states have call successors, (322), 42 states have call predecessors, (322), 42 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-11-29 06:12:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2449 transitions. [2023-11-29 06:12:01,249 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2449 transitions. Word has length 589 [2023-11-29 06:12:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:12:01,249 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2449 transitions. [2023-11-29 06:12:01,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.789473684210526) internal successors, (281), 19 states have internal predecessors, (281), 8 states have call successors, (166), 5 states have call predecessors, (166), 9 states have return successors, (167), 8 states have call predecessors, (167), 8 states have call successors, (167) [2023-11-29 06:12:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2449 transitions. [2023-11-29 06:12:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-11-29 06:12:01,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:12:01,254 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:01,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:12:01,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:12:01,455 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:12:01,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:12:01,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1421688401, now seen corresponding path program 1 times [2023-11-29 06:12:01,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:12:01,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14599343] [2023-11-29 06:12:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:01,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:12:01,525 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:12:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718017669] [2023-11-29 06:12:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:01,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:12:01,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:12:01,527 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:12:01,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:12:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:12:02,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 06:12:02,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:12:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8770 proven. 1134 refuted. 0 times theorem prover too weak. 6116 trivial. 0 not checked. [2023-11-29 06:12:05,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:12:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 378 proven. 1179 refuted. 0 times theorem prover too weak. 14463 trivial. 0 not checked. [2023-11-29 06:12:08,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:12:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14599343] [2023-11-29 06:12:08,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:12:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718017669] [2023-11-29 06:12:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718017669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:12:08,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:12:08,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-11-29 06:12:08,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746104870] [2023-11-29 06:12:08,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:12:08,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 06:12:08,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:12:08,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 06:12:08,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1793, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 06:12:08,235 INFO L87 Difference]: Start difference. First operand 1596 states and 2449 transitions. Second operand has 48 states, 46 states have (on average 5.8478260869565215) internal successors, (269), 44 states have internal predecessors, (269), 13 states have call successors, (169), 7 states have call predecessors, (169), 16 states have return successors, (170), 13 states have call predecessors, (170), 13 states have call successors, (170) [2023-11-29 06:12:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:12:12,326 INFO L93 Difference]: Finished difference Result 5870 states and 9183 transitions. [2023-11-29 06:12:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 06:12:12,326 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 5.8478260869565215) internal successors, (269), 44 states have internal predecessors, (269), 13 states have call successors, (169), 7 states have call predecessors, (169), 16 states have return successors, (170), 13 states have call predecessors, (170), 13 states have call successors, (170) Word has length 589 [2023-11-29 06:12:12,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:12:12,340 INFO L225 Difference]: With dead ends: 5870 [2023-11-29 06:12:12,340 INFO L226 Difference]: Without dead ends: 4536 [2023-11-29 06:12:12,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1223 GetRequests, 1136 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2119, Invalid=5713, Unknown=0, NotChecked=0, Total=7832 [2023-11-29 06:12:12,347 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 3800 mSDsluCounter, 3580 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3810 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 3723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:12:12,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3810 Valid, 4027 Invalid, 3723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 06:12:12,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2023-11-29 06:12:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 1882. [2023-11-29 06:12:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1483 states have (on average 1.430209035738368) internal successors, (2121), 1485 states have internal predecessors, (2121), 322 states have call successors, (322), 76 states have call predecessors, (322), 76 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-11-29 06:12:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2765 transitions. [2023-11-29 06:12:12,594 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2765 transitions. Word has length 589 [2023-11-29 06:12:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:12:12,595 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 2765 transitions. [2023-11-29 06:12:12,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 5.8478260869565215) internal successors, (269), 44 states have internal predecessors, (269), 13 states have call successors, (169), 7 states have call predecessors, (169), 16 states have return successors, (170), 13 states have call predecessors, (170), 13 states have call successors, (170) [2023-11-29 06:12:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2765 transitions. [2023-11-29 06:12:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-11-29 06:12:12,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:12:12,599 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:12,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:12:12,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:12:12,800 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:12:12,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:12:12,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1221999953, now seen corresponding path program 1 times [2023-11-29 06:12:12,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:12:12,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453974019] [2023-11-29 06:12:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:12:12,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:12:12,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524302107] [2023-11-29 06:12:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:12,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:12:12,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:12:12,870 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:12:12,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:12:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:12:13,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:12:13,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:12:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 5237 proven. 213 refuted. 0 times theorem prover too weak. 10570 trivial. 0 not checked. [2023-11-29 06:12:13,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:12:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 54 proven. 213 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2023-11-29 06:12:14,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:12:14,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453974019] [2023-11-29 06:12:14,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:12:14,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524302107] [2023-11-29 06:12:14,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524302107] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:12:14,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:12:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 06:12:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90119507] [2023-11-29 06:12:14,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:12:14,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:12:14,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:12:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:12:14,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:12:14,317 INFO L87 Difference]: Start difference. First operand 1882 states and 2765 transitions. Second operand has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) [2023-11-29 06:12:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:12:15,369 INFO L93 Difference]: Finished difference Result 4268 states and 6314 transitions. [2023-11-29 06:12:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:12:15,370 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) Word has length 589 [2023-11-29 06:12:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:12:15,378 INFO L225 Difference]: With dead ends: 4268 [2023-11-29 06:12:15,378 INFO L226 Difference]: Without dead ends: 2840 [2023-11-29 06:12:15,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 1167 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:12:15,382 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1495 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:12:15,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1232 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:12:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2023-11-29 06:12:15,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2214. [2023-11-29 06:12:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2214 states, 1810 states have (on average 1.4552486187845304) internal successors, (2634), 1812 states have internal predecessors, (2634), 322 states have call successors, (322), 81 states have call predecessors, (322), 81 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2023-11-29 06:12:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 3278 transitions. [2023-11-29 06:12:15,610 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 3278 transitions. Word has length 589 [2023-11-29 06:12:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:12:15,611 INFO L495 AbstractCegarLoop]: Abstraction has 2214 states and 3278 transitions. [2023-11-29 06:12:15,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 3 states have call successors, (161), 2 states have call predecessors, (161), 4 states have return successors, (162), 3 states have call predecessors, (162), 3 states have call successors, (162) [2023-11-29 06:12:15,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 3278 transitions. [2023-11-29 06:12:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-11-29 06:12:15,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:12:15,616 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:15,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 06:12:15,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:12:15,816 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:12:15,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:12:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash 17981771, now seen corresponding path program 1 times [2023-11-29 06:12:15,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:12:15,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627719254] [2023-11-29 06:12:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:15,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:12:15,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:12:15,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521196888] [2023-11-29 06:12:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:15,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:12:15,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:12:15,884 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:12:15,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:12:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:12:17,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:12:17,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:12:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 3269 proven. 237 refuted. 0 times theorem prover too weak. 12514 trivial. 0 not checked. [2023-11-29 06:12:18,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:12:21,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:12:21,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627719254] [2023-11-29 06:12:21,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:12:21,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521196888] [2023-11-29 06:12:21,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521196888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:12:21,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:12:21,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 06:12:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536485747] [2023-11-29 06:12:21,672 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 06:12:21,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:12:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:12:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:12:21,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:12:21,674 INFO L87 Difference]: Start difference. First operand 2214 states and 3278 transitions. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 10 states have internal predecessors, (148), 2 states have call successors, (90), 2 states have call predecessors, (90), 3 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-11-29 06:12:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:12:24,195 INFO L93 Difference]: Finished difference Result 11414 states and 17663 transitions. [2023-11-29 06:12:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:12:24,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 10 states have internal predecessors, (148), 2 states have call successors, (90), 2 states have call predecessors, (90), 3 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 589 [2023-11-29 06:12:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:12:24,212 INFO L225 Difference]: With dead ends: 11414 [2023-11-29 06:12:24,212 INFO L226 Difference]: Without dead ends: 9502 [2023-11-29 06:12:24,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1132 GetRequests, 1101 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:12:24,217 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1650 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 3510 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:12:24,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 3510 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:12:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9502 states. [2023-11-29 06:12:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9502 to 6324. [2023-11-29 06:12:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6324 states, 5600 states have (on average 1.5260714285714285) internal successors, (8546), 5608 states have internal predecessors, (8546), 578 states have call successors, (578), 145 states have call predecessors, (578), 145 states have return successors, (578), 570 states have call predecessors, (578), 578 states have call successors, (578) [2023-11-29 06:12:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 9702 transitions. [2023-11-29 06:12:24,807 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 9702 transitions. Word has length 589 [2023-11-29 06:12:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:12:24,807 INFO L495 AbstractCegarLoop]: Abstraction has 6324 states and 9702 transitions. [2023-11-29 06:12:24,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 10 states have internal predecessors, (148), 2 states have call successors, (90), 2 states have call predecessors, (90), 3 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2023-11-29 06:12:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 9702 transitions. [2023-11-29 06:12:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-11-29 06:12:24,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:12:24,814 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:24,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:12:25,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 06:12:25,015 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:12:25,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:12:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash -58919027, now seen corresponding path program 1 times [2023-11-29 06:12:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:12:25,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072459894] [2023-11-29 06:12:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:25,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:12:25,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:12:25,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293412580] [2023-11-29 06:12:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:25,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:12:25,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:12:25,073 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:12:25,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8b71729-4ae6-49c3-8607-a81134fc261c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:12:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:12:25,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 06:12:25,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:13:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 10764 proven. 816 refuted. 0 times theorem prover too weak. 4440 trivial. 0 not checked. [2023-11-29 06:13:38,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:13:55,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:13:55,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072459894] [2023-11-29 06:13:55,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:13:55,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293412580] [2023-11-29 06:13:55,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293412580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:13:55,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:13:55,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2023-11-29 06:13:55,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075277698] [2023-11-29 06:13:55,521 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 06:13:55,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:13:55,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:13:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:13:55,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1733, Unknown=2, NotChecked=0, Total=2162 [2023-11-29 06:13:55,523 INFO L87 Difference]: Start difference. First operand 6324 states and 9702 transitions. Second operand has 29 states, 29 states have (on average 6.0344827586206895) internal successors, (175), 26 states have internal predecessors, (175), 8 states have call successors, (90), 8 states have call predecessors, (90), 12 states have return successors, (90), 7 states have call predecessors, (90), 8 states have call successors, (90) [2023-11-29 06:14:19,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:14:23,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:14:27,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:14:31,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:14:36,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:14:40,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:14:43,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:14:48,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:15:09,173 WARN L293 SmtUtils]: Spent 15.48s on a formula simplification that was a NOOP. DAG size: 259 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:15:13,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:15:18,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:15:23,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:15:28,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:15:33,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:15:49,599 WARN L293 SmtUtils]: Spent 11.51s on a formula simplification that was a NOOP. DAG size: 263 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:15:53,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:15:56,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:16:00,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:07,617 WARN L293 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 373 DAG size of output: 363 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:17:11,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:16,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:21,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:25,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:29,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:35,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:41,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:45,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:50,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:52,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:17:56,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:01,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:06,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:10,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:14,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:19,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:24,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:28,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:32,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:33,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:37,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:43,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:47,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:51,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:18:56,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:19:00,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:19:02,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:19:06,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:16,911 WARN L293 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 371 DAG size of output: 361 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:20:21,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:20:41,469 WARN L293 SmtUtils]: Spent 10.91s on a formula simplification that was a NOOP. DAG size: 261 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:20:46,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:20:50,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:20:52,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:20:56,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:21:06,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:21:10,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:15,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:19,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:24,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:29,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:33,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:40,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:44,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:49,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:53,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:21:58,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:22:03,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:22:07,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:22:10,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:22:14,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:22:19,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:22:23,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:22:28,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:22:32,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:23:47,901 WARN L293 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 367 DAG size of output: 357 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:23:52,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:23:53,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:23:55,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:23:59,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:24:23,626 WARN L293 SmtUtils]: Spent 10.19s on a formula simplification that was a NOOP. DAG size: 257 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:24:27,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:24:32,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:24:37,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:24:38,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:24:42,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:24:47,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:24:51,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:24:55,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:25:01,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:06,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:10,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:14,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:19,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:23,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:28,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:35,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:40,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 06:25:44,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:49,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:53,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:25:58,187 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 [0]