./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/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_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/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_5bdb668d-34c9-4b0f-9b71-c49238089bd6/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 d5e62ad5739342cd7c449104f0191747734ea5d5507ad0897461505e92cf32f4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:07:04,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:07:04,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:07:04,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:07:04,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:07:04,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:07:04,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:07:04,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:07:04,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:07:04,828 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:07:04,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:07:04,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:07:04,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:07:04,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:07:04,831 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:07:04,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:07:04,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:07:04,833 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:07:04,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:07:04,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:07:04,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:07:04,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:07:04,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:07:04,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:07:04,838 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:07:04,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:07:04,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:07:04,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:07:04,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:07:04,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:07:04,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:07:04,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:07:04,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:07:04,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:07:04,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:07:04,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:07:04,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:07:04,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:07:04,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:07:04,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:07:04,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:07:04,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:07:04,843 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_5bdb668d-34c9-4b0f-9b71-c49238089bd6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5e62ad5739342cd7c449104f0191747734ea5d5507ad0897461505e92cf32f4 [2023-11-29 05:07:05,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:07:05,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:07:05,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:07:05,081 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:07:05,081 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:07:05,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.i [2023-11-29 05:07:07,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:07:08,230 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:07:08,231 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.i [2023-11-29 05:07:08,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/data/794ec5f7c/a3de4701942348a0ab494bc20e6ff39f/FLAGa7ea35fde [2023-11-29 05:07:08,264 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/data/794ec5f7c/a3de4701942348a0ab494bc20e6ff39f [2023-11-29 05:07:08,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:07:08,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:07:08,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:07:08,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:07:08,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:07:08,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:08,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a96168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08, skipping insertion in model container [2023-11-29 05:07:08,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:08,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:07:08,497 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_5bdb668d-34c9-4b0f-9b71-c49238089bd6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.i[916,929] [2023-11-29 05:07:08,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:07:08,747 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:07:08,759 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_5bdb668d-34c9-4b0f-9b71-c49238089bd6/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.i[916,929] [2023-11-29 05:07:08,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:07:08,913 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:07:08,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08 WrapperNode [2023-11-29 05:07:08,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:07:08,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:07:08,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:07:08,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:07:08,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:08,950 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,018 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 673 [2023-11-29 05:07:09,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:07:09,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:07:09,019 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:07:09,019 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:07:09,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,072 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 05:07:09,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:07:09,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:07:09,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:07:09,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:07:09,132 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (1/1) ... [2023-11-29 05:07:09,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:07:09,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:09,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:07:09,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:07:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:07:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:07:09,206 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:07:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:07:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:07:09,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:07:09,345 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:07:09,347 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:07:10,277 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:07:10,331 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:07:10,332 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:07:10,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:07:10 BoogieIcfgContainer [2023-11-29 05:07:10,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:07:10,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:07:10,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:07:10,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:07:10,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:07:08" (1/3) ... [2023-11-29 05:07:10,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0219fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:07:10, skipping insertion in model container [2023-11-29 05:07:10,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:07:08" (2/3) ... [2023-11-29 05:07:10,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0219fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:07:10, skipping insertion in model container [2023-11-29 05:07:10,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:07:10" (3/3) ... [2023-11-29 05:07:10,342 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-41.i [2023-11-29 05:07:10,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:07:10,362 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:07:10,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:07:10,425 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;@96e38d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:07:10,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:07:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 186 states have (on average 1.60752688172043) internal successors, (299), 187 states have internal predecessors, (299), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-29 05:07:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-11-29 05:07:10,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:10,461 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:10,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:10,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:10,468 INFO L85 PathProgramCache]: Analyzing trace with hash -359500274, now seen corresponding path program 1 times [2023-11-29 05:07:10,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869945433] [2023-11-29 05:07:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:10,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:10,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:10,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869945433] [2023-11-29 05:07:10,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 05:07:10,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550114300] [2023-11-29 05:07:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:10,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:10,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:10,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:10,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:07:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:11,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:07:11,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2023-11-29 05:07:11,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:11,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550114300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:11,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:11,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:07:11,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668758822] [2023-11-29 05:07:11,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:11,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:07:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:11,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:07:11,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:07:11,350 INFO L87 Difference]: Start difference. First operand has 250 states, 186 states have (on average 1.60752688172043) internal successors, (299), 187 states have internal predecessors, (299), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2023-11-29 05:07:11,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:11,420 INFO L93 Difference]: Finished difference Result 496 states and 899 transitions. [2023-11-29 05:07:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:07:11,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) Word has length 421 [2023-11-29 05:07:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:11,434 INFO L225 Difference]: With dead ends: 496 [2023-11-29 05:07:11,434 INFO L226 Difference]: Without dead ends: 247 [2023-11-29 05:07:11,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 420 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 05:07:11,445 INFO L413 NwaCegarLoop]: 409 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, 409 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 05:07:11,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:07:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-29 05:07:11,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-11-29 05:07:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 184 states have (on average 1.576086956521739) internal successors, (290), 184 states have internal predecessors, (290), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-29 05:07:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 412 transitions. [2023-11-29 05:07:11,518 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 412 transitions. Word has length 421 [2023-11-29 05:07:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:11,518 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 412 transitions. [2023-11-29 05:07:11,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2023-11-29 05:07:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 412 transitions. [2023-11-29 05:07:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-11-29 05:07:11,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:11,530 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:11,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:07:11,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:07:11,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:11,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:11,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1189161600, now seen corresponding path program 1 times [2023-11-29 05:07:11,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:11,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460197178] [2023-11-29 05:07:11,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:11,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:11,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:11,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180405032] [2023-11-29 05:07:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:11,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:11,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:11,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:11,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:07:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:12,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:07:12,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-29 05:07:12,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:12,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:12,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460197178] [2023-11-29 05:07:12,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:12,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180405032] [2023-11-29 05:07:12,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180405032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:12,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:12,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:07:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097737701] [2023-11-29 05:07:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:12,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:07:12,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:07:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:07:12,391 INFO L87 Difference]: Start difference. First operand 247 states and 412 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:12,613 INFO L93 Difference]: Finished difference Result 727 states and 1211 transitions. [2023-11-29 05:07:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:07:12,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 421 [2023-11-29 05:07:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:12,623 INFO L225 Difference]: With dead ends: 727 [2023-11-29 05:07:12,623 INFO L226 Difference]: Without dead ends: 481 [2023-11-29 05:07:12,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 419 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 05:07:12,628 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 374 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:12,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1114 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:07:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-11-29 05:07:12,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 296. [2023-11-29 05:07:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 233 states have (on average 1.592274678111588) internal successors, (371), 233 states have internal predecessors, (371), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-29 05:07:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 493 transitions. [2023-11-29 05:07:12,682 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 493 transitions. Word has length 421 [2023-11-29 05:07:12,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:12,685 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 493 transitions. [2023-11-29 05:07:12,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 493 transitions. [2023-11-29 05:07:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-11-29 05:07:12,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:12,696 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:12,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:07:12,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:12,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:12,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2130320944, now seen corresponding path program 1 times [2023-11-29 05:07:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:12,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594644679] [2023-11-29 05:07:12,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:12,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:12,985 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:12,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49501460] [2023-11-29 05:07:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:12,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:12,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:12,987 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:12,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:07:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:13,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:07:13,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-29 05:07:13,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:13,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594644679] [2023-11-29 05:07:13,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:13,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49501460] [2023-11-29 05:07:13,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49501460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:13,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:13,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:07:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018008378] [2023-11-29 05:07:13,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:13,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:07:13,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:13,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:07:13,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:07:13,563 INFO L87 Difference]: Start difference. First operand 296 states and 493 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:13,636 INFO L93 Difference]: Finished difference Result 865 states and 1441 transitions. [2023-11-29 05:07:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:07:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 422 [2023-11-29 05:07:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:13,644 INFO L225 Difference]: With dead ends: 865 [2023-11-29 05:07:13,644 INFO L226 Difference]: Without dead ends: 570 [2023-11-29 05:07:13,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 420 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 05:07:13,647 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 314 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:13,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 937 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:07:13,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-11-29 05:07:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 567. [2023-11-29 05:07:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 452 states have (on average 1.5973451327433628) internal successors, (722), 453 states have internal predecessors, (722), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-29 05:07:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 946 transitions. [2023-11-29 05:07:13,697 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 946 transitions. Word has length 422 [2023-11-29 05:07:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:13,698 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 946 transitions. [2023-11-29 05:07:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 946 transitions. [2023-11-29 05:07:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-11-29 05:07:13,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:13,704 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:13,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 05:07:13,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:13,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:13,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:13,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1109252590, now seen corresponding path program 1 times [2023-11-29 05:07:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:13,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791426477] [2023-11-29 05:07:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:13,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:13,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:13,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163852831] [2023-11-29 05:07:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:13,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:13,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:13,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:13,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:07:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:14,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:07:14,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-29 05:07:14,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:14,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:14,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791426477] [2023-11-29 05:07:14,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:14,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163852831] [2023-11-29 05:07:14,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163852831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:14,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:14,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:07:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259179571] [2023-11-29 05:07:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:07:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:07:14,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:07:14,532 INFO L87 Difference]: Start difference. First operand 567 states and 946 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:14,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:14,680 INFO L93 Difference]: Finished difference Result 1563 states and 2598 transitions. [2023-11-29 05:07:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:07:14,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 422 [2023-11-29 05:07:14,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:14,692 INFO L225 Difference]: With dead ends: 1563 [2023-11-29 05:07:14,692 INFO L226 Difference]: Without dead ends: 997 [2023-11-29 05:07:14,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 420 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 05:07:14,696 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 358 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:14,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1054 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-11-29 05:07:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 701. [2023-11-29 05:07:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 586 states have (on average 1.6126279863481228) internal successors, (945), 587 states have internal predecessors, (945), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-29 05:07:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1169 transitions. [2023-11-29 05:07:14,771 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1169 transitions. Word has length 422 [2023-11-29 05:07:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:14,772 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1169 transitions. [2023-11-29 05:07:14,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:14,773 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1169 transitions. [2023-11-29 05:07:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-11-29 05:07:14,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:14,778 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:14,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:07:14,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:14,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:14,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1046656305, now seen corresponding path program 1 times [2023-11-29 05:07:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:14,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597667516] [2023-11-29 05:07:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:14,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:15,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:15,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943719290] [2023-11-29 05:07:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:15,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:15,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:15,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:15,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:07:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:15,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:07:15,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-29 05:07:15,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:15,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597667516] [2023-11-29 05:07:15,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943719290] [2023-11-29 05:07:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943719290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:15,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:15,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:07:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806153181] [2023-11-29 05:07:15,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:15,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:07:15,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:15,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:07:15,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:07:15,597 INFO L87 Difference]: Start difference. First operand 701 states and 1169 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:16,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:16,185 INFO L93 Difference]: Finished difference Result 1993 states and 3322 transitions. [2023-11-29 05:07:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:07:16,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 422 [2023-11-29 05:07:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:16,196 INFO L225 Difference]: With dead ends: 1993 [2023-11-29 05:07:16,196 INFO L226 Difference]: Without dead ends: 1293 [2023-11-29 05:07:16,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:07:16,199 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 1132 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:16,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 2976 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:07:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2023-11-29 05:07:16,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 771. [2023-11-29 05:07:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 656 states have (on average 1.586890243902439) internal successors, (1041), 657 states have internal predecessors, (1041), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-29 05:07:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1265 transitions. [2023-11-29 05:07:16,255 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1265 transitions. Word has length 422 [2023-11-29 05:07:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:16,257 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1265 transitions. [2023-11-29 05:07:16,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:16,257 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1265 transitions. [2023-11-29 05:07:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-11-29 05:07:16,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:16,262 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:16,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:07:16,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:16,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:16,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:16,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2067267665, now seen corresponding path program 1 times [2023-11-29 05:07:16,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:16,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331708341] [2023-11-29 05:07:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:16,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:16,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:16,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644328078] [2023-11-29 05:07:16,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:16,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:16,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:16,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:16,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:07:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:16,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:07:16,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-29 05:07:17,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331708341] [2023-11-29 05:07:17,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644328078] [2023-11-29 05:07:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644328078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:17,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:17,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:07:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048272856] [2023-11-29 05:07:17,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:07:17,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:07:17,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:07:17,028 INFO L87 Difference]: Start difference. First operand 771 states and 1265 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:17,150 INFO L93 Difference]: Finished difference Result 1940 states and 3183 transitions. [2023-11-29 05:07:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:07:17,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 422 [2023-11-29 05:07:17,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:17,158 INFO L225 Difference]: With dead ends: 1940 [2023-11-29 05:07:17,158 INFO L226 Difference]: Without dead ends: 1170 [2023-11-29 05:07:17,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 420 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 05:07:17,161 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 359 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:17,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 795 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:17,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-11-29 05:07:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 892. [2023-11-29 05:07:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 777 states have (on average 1.5971685971685972) internal successors, (1241), 778 states have internal predecessors, (1241), 112 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-29 05:07:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1465 transitions. [2023-11-29 05:07:17,216 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1465 transitions. Word has length 422 [2023-11-29 05:07:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:17,217 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1465 transitions. [2023-11-29 05:07:17,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1465 transitions. [2023-11-29 05:07:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-11-29 05:07:17,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:17,222 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:17,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:07:17,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:17,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:17,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:17,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1198340333, now seen corresponding path program 1 times [2023-11-29 05:07:17,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:17,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834073185] [2023-11-29 05:07:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:17,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:17,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:17,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73809118] [2023-11-29 05:07:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:17,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:17,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:17,493 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:17,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:07:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:17,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:07:17,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 1998 proven. 27 refuted. 0 times theorem prover too weak. 5295 trivial. 0 not checked. [2023-11-29 05:07:17,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 153 proven. 27 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-11-29 05:07:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834073185] [2023-11-29 05:07:18,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73809118] [2023-11-29 05:07:18,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73809118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:07:18,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:18,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:07:18,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54871119] [2023-11-29 05:07:18,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:18,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:07:18,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:18,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:07:18,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:07:18,305 INFO L87 Difference]: Start difference. First operand 892 states and 1465 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-29 05:07:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:19,030 INFO L93 Difference]: Finished difference Result 1350 states and 2197 transitions. [2023-11-29 05:07:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:07:19,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 422 [2023-11-29 05:07:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:19,034 INFO L225 Difference]: With dead ends: 1350 [2023-11-29 05:07:19,035 INFO L226 Difference]: Without dead ends: 459 [2023-11-29 05:07:19,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 836 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:07:19,038 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 323 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:19,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1120 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:07:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-29 05:07:19,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 452. [2023-11-29 05:07:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 336 states have (on average 1.4910714285714286) internal successors, (501), 337 states have internal predecessors, (501), 112 states have call successors, (112), 3 states have call predecessors, (112), 3 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-29 05:07:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 725 transitions. [2023-11-29 05:07:19,065 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 725 transitions. Word has length 422 [2023-11-29 05:07:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:19,066 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 725 transitions. [2023-11-29 05:07:19,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-29 05:07:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 725 transitions. [2023-11-29 05:07:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-11-29 05:07:19,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:19,069 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:19,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:07:19,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 05:07:19,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:19,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:19,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1044222569, now seen corresponding path program 1 times [2023-11-29 05:07:19,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:19,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422317161] [2023-11-29 05:07:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:19,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:19,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:19,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440361448] [2023-11-29 05:07:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:19,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:19,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:19,330 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:19,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:07:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:19,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:07:19,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-29 05:07:19,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:19,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:19,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422317161] [2023-11-29 05:07:19,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:19,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440361448] [2023-11-29 05:07:19,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440361448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:19,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:19,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:07:19,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27979956] [2023-11-29 05:07:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:19,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:07:19,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:07:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:07:19,804 INFO L87 Difference]: Start difference. First operand 452 states and 725 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:20,264 INFO L93 Difference]: Finished difference Result 988 states and 1574 transitions. [2023-11-29 05:07:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:07:20,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 423 [2023-11-29 05:07:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:20,270 INFO L225 Difference]: With dead ends: 988 [2023-11-29 05:07:20,270 INFO L226 Difference]: Without dead ends: 618 [2023-11-29 05:07:20,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:07:20,272 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 872 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:20,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1692 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:07:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-11-29 05:07:20,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 387. [2023-11-29 05:07:20,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 269 states have (on average 1.4349442379182156) internal successors, (386), 270 states have internal predecessors, (386), 113 states have call successors, (113), 4 states have call predecessors, (113), 4 states have return successors, (113), 112 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-29 05:07:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 612 transitions. [2023-11-29 05:07:20,330 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 612 transitions. Word has length 423 [2023-11-29 05:07:20,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:20,331 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 612 transitions. [2023-11-29 05:07:20,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:20,332 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 612 transitions. [2023-11-29 05:07:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-11-29 05:07:20,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:20,335 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:20,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:07:20,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 05:07:20,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:20,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:20,537 INFO L85 PathProgramCache]: Analyzing trace with hash -463572657, now seen corresponding path program 1 times [2023-11-29 05:07:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:20,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407433412] [2023-11-29 05:07:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:20,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:20,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293056678] [2023-11-29 05:07:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:20,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:20,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:20,597 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:20,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:07:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:20,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:07:20,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 2080 proven. 150 refuted. 0 times theorem prover too weak. 5090 trivial. 0 not checked. [2023-11-29 05:07:21,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 30 proven. 150 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-11-29 05:07:21,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:21,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407433412] [2023-11-29 05:07:21,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:21,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293056678] [2023-11-29 05:07:21,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293056678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:07:21,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:21,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:07:21,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712532240] [2023-11-29 05:07:21,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:21,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:07:21,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:07:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:07:21,712 INFO L87 Difference]: Start difference. First operand 387 states and 612 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-29 05:07:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:22,105 INFO L93 Difference]: Finished difference Result 704 states and 1101 transitions. [2023-11-29 05:07:22,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:07:22,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 424 [2023-11-29 05:07:22,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:22,110 INFO L225 Difference]: With dead ends: 704 [2023-11-29 05:07:22,110 INFO L226 Difference]: Without dead ends: 405 [2023-11-29 05:07:22,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:07:22,113 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 198 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:22,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 827 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:07:22,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-29 05:07:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 395. [2023-11-29 05:07:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 275 states have (on average 1.4181818181818182) internal successors, (390), 276 states have internal predecessors, (390), 113 states have call successors, (113), 6 states have call predecessors, (113), 6 states have return successors, (113), 112 states have call predecessors, (113), 113 states have call successors, (113) [2023-11-29 05:07:22,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 616 transitions. [2023-11-29 05:07:22,161 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 616 transitions. Word has length 424 [2023-11-29 05:07:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:22,162 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 616 transitions. [2023-11-29 05:07:22,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2023-11-29 05:07:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 616 transitions. [2023-11-29 05:07:22,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-11-29 05:07:22,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:22,166 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:22,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 05:07:22,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 05:07:22,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:22,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 466099269, now seen corresponding path program 1 times [2023-11-29 05:07:22,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:22,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060290820] [2023-11-29 05:07:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:22,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:22,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:22,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749846269] [2023-11-29 05:07:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:22,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:22,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:22,416 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:22,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:07:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:22,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:07:22,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-29 05:07:22,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:22,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060290820] [2023-11-29 05:07:22,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749846269] [2023-11-29 05:07:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749846269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:22,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:22,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:07:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542533005] [2023-11-29 05:07:22,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:22,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:07:22,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:22,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:07:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:07:22,879 INFO L87 Difference]: Start difference. First operand 395 states and 616 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:23,023 INFO L93 Difference]: Finished difference Result 881 states and 1375 transitions. [2023-11-29 05:07:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:07:23,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 425 [2023-11-29 05:07:23,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:23,027 INFO L225 Difference]: With dead ends: 881 [2023-11-29 05:07:23,027 INFO L226 Difference]: Without dead ends: 578 [2023-11-29 05:07:23,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 423 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 05:07:23,028 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 236 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:23,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 839 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:07:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-11-29 05:07:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 575. [2023-11-29 05:07:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 414 states have (on average 1.434782608695652) internal successors, (594), 416 states have internal predecessors, (594), 151 states have call successors, (151), 9 states have call predecessors, (151), 9 states have return successors, (151), 149 states have call predecessors, (151), 151 states have call successors, (151) [2023-11-29 05:07:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 896 transitions. [2023-11-29 05:07:23,069 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 896 transitions. Word has length 425 [2023-11-29 05:07:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:23,070 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 896 transitions. [2023-11-29 05:07:23,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 896 transitions. [2023-11-29 05:07:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-11-29 05:07:23,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:23,073 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:23,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:07:23,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:23,273 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:23,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash -427387069, now seen corresponding path program 1 times [2023-11-29 05:07:23,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:23,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391348107] [2023-11-29 05:07:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:23,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:23,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:23,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979021104] [2023-11-29 05:07:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:23,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:23,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:23,340 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:23,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:07:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:23,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:07:23,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 2850 proven. 45 refuted. 0 times theorem prover too weak. 4425 trivial. 0 not checked. [2023-11-29 05:07:23,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 135 proven. 45 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-11-29 05:07:24,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:24,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391348107] [2023-11-29 05:07:24,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979021104] [2023-11-29 05:07:24,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979021104] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:07:24,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:24,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:07:24,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484700597] [2023-11-29 05:07:24,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:24,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:07:24,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:24,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:07:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:07:24,076 INFO L87 Difference]: Start difference. First operand 575 states and 896 transitions. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-11-29 05:07:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:24,471 INFO L93 Difference]: Finished difference Result 1076 states and 1667 transitions. [2023-11-29 05:07:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:07:24,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 425 [2023-11-29 05:07:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:24,475 INFO L225 Difference]: With dead ends: 1076 [2023-11-29 05:07:24,475 INFO L226 Difference]: Without dead ends: 597 [2023-11-29 05:07:24,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 842 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 05:07:24,478 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 292 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:24,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 832 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:07:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-11-29 05:07:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 583. [2023-11-29 05:07:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 420 states have (on average 1.4238095238095239) internal successors, (598), 422 states have internal predecessors, (598), 151 states have call successors, (151), 11 states have call predecessors, (151), 11 states have return successors, (151), 149 states have call predecessors, (151), 151 states have call successors, (151) [2023-11-29 05:07:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 900 transitions. [2023-11-29 05:07:24,546 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 900 transitions. Word has length 425 [2023-11-29 05:07:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:24,546 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 900 transitions. [2023-11-29 05:07:24,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (76), 2 states have call predecessors, (76), 4 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2023-11-29 05:07:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 900 transitions. [2023-11-29 05:07:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-11-29 05:07:24,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:24,551 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:24,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:07:24,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:24,760 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:24,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:24,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2113566907, now seen corresponding path program 1 times [2023-11-29 05:07:24,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:24,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301478766] [2023-11-29 05:07:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:24,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:24,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224895110] [2023-11-29 05:07:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:24,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:24,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:24,817 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:24,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:07:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:25,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:07:25,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-29 05:07:25,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:25,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301478766] [2023-11-29 05:07:25,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224895110] [2023-11-29 05:07:25,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224895110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:25,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:25,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:07:25,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211754076] [2023-11-29 05:07:25,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:25,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:07:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:25,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:07:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:07:25,510 INFO L87 Difference]: Start difference. First operand 583 states and 900 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:25,895 INFO L93 Difference]: Finished difference Result 1383 states and 2154 transitions. [2023-11-29 05:07:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:07:25,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 425 [2023-11-29 05:07:25,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:25,903 INFO L225 Difference]: With dead ends: 1383 [2023-11-29 05:07:25,904 INFO L226 Difference]: Without dead ends: 900 [2023-11-29 05:07:25,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 422 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 05:07:25,906 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 283 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:25,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1136 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:07:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2023-11-29 05:07:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 609. [2023-11-29 05:07:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 436 states have (on average 1.4174311926605505) internal successors, (618), 437 states have internal predecessors, (618), 160 states have call successors, (160), 12 states have call predecessors, (160), 12 states have return successors, (160), 159 states have call predecessors, (160), 160 states have call successors, (160) [2023-11-29 05:07:25,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 938 transitions. [2023-11-29 05:07:25,984 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 938 transitions. Word has length 425 [2023-11-29 05:07:25,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:25,986 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 938 transitions. [2023-11-29 05:07:25,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:25,986 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 938 transitions. [2023-11-29 05:07:25,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-11-29 05:07:25,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:25,991 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:26,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 05:07:26,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:26,191 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:26,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2086501305, now seen corresponding path program 1 times [2023-11-29 05:07:26,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:26,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300101874] [2023-11-29 05:07:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:26,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728491350] [2023-11-29 05:07:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:26,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:26,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:26,254 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:26,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:07:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:26,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:07:26,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3300 proven. 120 refuted. 0 times theorem prover too weak. 3900 trivial. 0 not checked. [2023-11-29 05:07:27,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-11-29 05:07:28,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:28,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300101874] [2023-11-29 05:07:28,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:28,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728491350] [2023-11-29 05:07:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728491350] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:07:28,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-29 05:07:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080618725] [2023-11-29 05:07:28,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:28,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:07:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:28,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:07:28,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:07:28,186 INFO L87 Difference]: Start difference. First operand 609 states and 938 transitions. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 4 states have call successors, (122), 3 states have call predecessors, (122), 5 states have return successors, (122), 4 states have call predecessors, (122), 4 states have call successors, (122) [2023-11-29 05:07:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:29,920 INFO L93 Difference]: Finished difference Result 2807 states and 4341 transitions. [2023-11-29 05:07:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:07:29,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 4 states have call successors, (122), 3 states have call predecessors, (122), 5 states have return successors, (122), 4 states have call predecessors, (122), 4 states have call successors, (122) Word has length 425 [2023-11-29 05:07:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:29,934 INFO L225 Difference]: With dead ends: 2807 [2023-11-29 05:07:29,934 INFO L226 Difference]: Without dead ends: 2324 [2023-11-29 05:07:29,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:07:29,936 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 1329 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:29,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 2018 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 05:07:29,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2023-11-29 05:07:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 1764. [2023-11-29 05:07:30,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1332 states have (on average 1.4331831831831832) internal successors, (1909), 1337 states have internal predecessors, (1909), 398 states have call successors, (398), 33 states have call predecessors, (398), 33 states have return successors, (398), 393 states have call predecessors, (398), 398 states have call successors, (398) [2023-11-29 05:07:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2705 transitions. [2023-11-29 05:07:30,112 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2705 transitions. Word has length 425 [2023-11-29 05:07:30,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:30,144 INFO L495 AbstractCegarLoop]: Abstraction has 1764 states and 2705 transitions. [2023-11-29 05:07:30,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 4 states have call successors, (122), 3 states have call predecessors, (122), 5 states have return successors, (122), 4 states have call predecessors, (122), 4 states have call successors, (122) [2023-11-29 05:07:30,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2705 transitions. [2023-11-29 05:07:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-11-29 05:07:30,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:30,149 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:30,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:07:30,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:30,350 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:30,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash 729722119, now seen corresponding path program 1 times [2023-11-29 05:07:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:30,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44357531] [2023-11-29 05:07:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:30,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:30,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:30,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744226697] [2023-11-29 05:07:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:30,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:30,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:30,415 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:30,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:07:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:31,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:07:31,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2023-11-29 05:07:31,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:07:31,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:31,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44357531] [2023-11-29 05:07:31,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:31,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744226697] [2023-11-29 05:07:31,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744226697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:07:31,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:07:31,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:07:31,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517351221] [2023-11-29 05:07:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:07:31,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:07:31,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:31,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:07:31,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:07:31,990 INFO L87 Difference]: Start difference. First operand 1764 states and 2705 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:32,524 INFO L93 Difference]: Finished difference Result 4152 states and 6401 transitions. [2023-11-29 05:07:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:07:32,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 426 [2023-11-29 05:07:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:32,539 INFO L225 Difference]: With dead ends: 4152 [2023-11-29 05:07:32,539 INFO L226 Difference]: Without dead ends: 2518 [2023-11-29 05:07:32,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:07:32,545 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 478 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:32,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1393 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:07:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2023-11-29 05:07:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1766. [2023-11-29 05:07:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1334 states have (on average 1.4325337331334334) internal successors, (1911), 1339 states have internal predecessors, (1911), 398 states have call successors, (398), 33 states have call predecessors, (398), 33 states have return successors, (398), 393 states have call predecessors, (398), 398 states have call successors, (398) [2023-11-29 05:07:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2707 transitions. [2023-11-29 05:07:32,825 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2707 transitions. Word has length 426 [2023-11-29 05:07:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:32,825 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2707 transitions. [2023-11-29 05:07:32,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2023-11-29 05:07:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2707 transitions. [2023-11-29 05:07:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-11-29 05:07:32,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:32,829 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:32,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:07:33,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:07:33,030 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:33,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:33,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1881875417, now seen corresponding path program 1 times [2023-11-29 05:07:33,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:33,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666721597] [2023-11-29 05:07:33,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:33,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:33,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:33,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938895552] [2023-11-29 05:07:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:33,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:33,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:33,081 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:33,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:07:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:33,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:07:33,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3342 proven. 234 refuted. 0 times theorem prover too weak. 3744 trivial. 0 not checked. [2023-11-29 05:07:34,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 237 refuted. 0 times theorem prover too weak. 6963 trivial. 0 not checked. [2023-11-29 05:07:35,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:35,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666721597] [2023-11-29 05:07:35,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:35,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938895552] [2023-11-29 05:07:35,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938895552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:07:35,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:35,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-29 05:07:35,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131885736] [2023-11-29 05:07:35,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:35,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:07:35,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:07:35,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:07:35,333 INFO L87 Difference]: Start difference. First operand 1766 states and 2707 transitions. Second operand has 16 states, 15 states have (on average 16.933333333333334) internal successors, (254), 14 states have internal predecessors, (254), 6 states have call successors, (122), 4 states have call predecessors, (122), 7 states have return successors, (122), 6 states have call predecessors, (122), 6 states have call successors, (122) [2023-11-29 05:07:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:38,712 INFO L93 Difference]: Finished difference Result 6418 states and 9804 transitions. [2023-11-29 05:07:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 05:07:38,713 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 16.933333333333334) internal successors, (254), 14 states have internal predecessors, (254), 6 states have call successors, (122), 4 states have call predecessors, (122), 7 states have return successors, (122), 6 states have call predecessors, (122), 6 states have call successors, (122) Word has length 427 [2023-11-29 05:07:38,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:38,736 INFO L225 Difference]: With dead ends: 6418 [2023-11-29 05:07:38,736 INFO L226 Difference]: Without dead ends: 4784 [2023-11-29 05:07:38,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=753, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:07:38,741 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1664 mSDsluCounter, 3188 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3473 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:38,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 3473 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 05:07:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4784 states. [2023-11-29 05:07:39,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4784 to 3396. [2023-11-29 05:07:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 2569 states have (on average 1.4242896068509148) internal successors, (3659), 2584 states have internal predecessors, (3659), 756 states have call successors, (756), 70 states have call predecessors, (756), 70 states have return successors, (756), 741 states have call predecessors, (756), 756 states have call successors, (756) [2023-11-29 05:07:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 5171 transitions. [2023-11-29 05:07:39,158 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 5171 transitions. Word has length 427 [2023-11-29 05:07:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:39,159 INFO L495 AbstractCegarLoop]: Abstraction has 3396 states and 5171 transitions. [2023-11-29 05:07:39,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 16.933333333333334) internal successors, (254), 14 states have internal predecessors, (254), 6 states have call successors, (122), 4 states have call predecessors, (122), 7 states have return successors, (122), 6 states have call predecessors, (122), 6 states have call successors, (122) [2023-11-29 05:07:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 5171 transitions. [2023-11-29 05:07:39,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-11-29 05:07:39,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:39,164 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:39,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:07:39,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:07:39,368 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:39,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1623709979, now seen corresponding path program 1 times [2023-11-29 05:07:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862842678] [2023-11-29 05:07:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:39,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:39,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492251911] [2023-11-29 05:07:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:39,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:39,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:39,417 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:39,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:07:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:39,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 05:07:40,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3258 proven. 468 refuted. 0 times theorem prover too weak. 3594 trivial. 0 not checked. [2023-11-29 05:07:41,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:42,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 216 proven. 486 refuted. 0 times theorem prover too weak. 6618 trivial. 0 not checked. [2023-11-29 05:07:42,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:07:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862842678] [2023-11-29 05:07:42,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:07:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492251911] [2023-11-29 05:07:42,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492251911] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:07:42,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:42,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-11-29 05:07:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527066968] [2023-11-29 05:07:42,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:42,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:07:42,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:07:42,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:07:42,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:07:42,295 INFO L87 Difference]: Start difference. First operand 3396 states and 5171 transitions. Second operand has 28 states, 26 states have (on average 8.423076923076923) internal successors, (219), 24 states have internal predecessors, (219), 9 states have call successors, (103), 5 states have call predecessors, (103), 10 states have return successors, (104), 9 states have call predecessors, (104), 9 states have call successors, (104) [2023-11-29 05:07:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:07:45,044 INFO L93 Difference]: Finished difference Result 7044 states and 10538 transitions. [2023-11-29 05:07:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 05:07:45,045 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 8.423076923076923) internal successors, (219), 24 states have internal predecessors, (219), 9 states have call successors, (103), 5 states have call predecessors, (103), 10 states have return successors, (104), 9 states have call predecessors, (104), 9 states have call successors, (104) Word has length 427 [2023-11-29 05:07:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:07:45,069 INFO L225 Difference]: With dead ends: 7044 [2023-11-29 05:07:45,069 INFO L226 Difference]: Without dead ends: 3784 [2023-11-29 05:07:45,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 830 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1229, Invalid=3327, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 05:07:45,079 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 972 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:07:45,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2096 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 05:07:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2023-11-29 05:07:45,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 2772. [2023-11-29 05:07:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2125 states have (on average 1.4150588235294117) internal successors, (3007), 2135 states have internal predecessors, (3007), 565 states have call successors, (565), 81 states have call predecessors, (565), 81 states have return successors, (565), 555 states have call predecessors, (565), 565 states have call successors, (565) [2023-11-29 05:07:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 4137 transitions. [2023-11-29 05:07:45,486 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 4137 transitions. Word has length 427 [2023-11-29 05:07:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:07:45,487 INFO L495 AbstractCegarLoop]: Abstraction has 2772 states and 4137 transitions. [2023-11-29 05:07:45,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 8.423076923076923) internal successors, (219), 24 states have internal predecessors, (219), 9 states have call successors, (103), 5 states have call predecessors, (103), 10 states have return successors, (104), 9 states have call predecessors, (104), 9 states have call successors, (104) [2023-11-29 05:07:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 4137 transitions. [2023-11-29 05:07:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-11-29 05:07:45,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:07:45,492 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:07:45,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:07:45,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:07:45,693 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:07:45,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:07:45,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1773864039, now seen corresponding path program 1 times [2023-11-29 05:07:45,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:07:45,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634635795] [2023-11-29 05:07:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:45,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:07:45,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:07:45,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829498232] [2023-11-29 05:07:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:07:45,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:07:45,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:07:45,744 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:07:45,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bdb668d-34c9-4b0f-9b71-c49238089bd6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:07:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:46,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-29 05:07:46,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:31,298 WARN L293 SmtUtils]: Spent 14.72s on a formula simplification. DAG size of input: 466 DAG size of output: 312 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:10:36,311 WARN L293 SmtUtils]: Spent 9.75s on a formula simplification. DAG size of input: 516 DAG size of output: 512 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:12:27,761 WARN L293 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 511 DAG size of output: 497 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:13:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 4632 proven. 1179 refuted. 0 times theorem prover too weak. 1509 trivial. 0 not checked. [2023-11-29 05:13:54,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:14:40,498 WARN L293 SmtUtils]: Spent 5.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:15:57,919 WARN L293 SmtUtils]: Spent 54.88s on a formula simplification that was a NOOP. DAG size: 250 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:16:10,738 WARN L293 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:18:56,118 WARN L293 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:19:02,005 WARN L293 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 05:21:30,648 WARN L293 SmtUtils]: Spent 7.78s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)