./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx --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 a8373cb8fe582bc9cb45d9609c89b33bf31b030c114c7e7fdfee851d52974fb9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:21:32,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:21:32,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:21:32,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:21:32,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:21:32,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:21:32,705 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:21:32,706 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:21:32,707 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:21:32,708 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:21:32,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:21:32,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:21:32,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:21:32,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:21:32,711 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:21:32,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:21:32,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:21:32,713 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:21:32,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:21:32,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:21:32,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:21:32,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:21:32,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:21:32,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:21:32,717 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:21:32,718 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:21:32,718 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:21:32,719 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:21:32,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:21:32,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:21:32,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:21:32,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:32,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:21:32,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:21:32,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:21:32,722 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:21:32,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:21:32,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:21:32,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:21:32,723 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:21:32,723 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:21:32,724 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:21:32,724 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_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8373cb8fe582bc9cb45d9609c89b33bf31b030c114c7e7fdfee851d52974fb9 [2023-11-21 22:21:32,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:21:33,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:21:33,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:21:33,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:21:33,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:21:33,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2023-11-21 22:21:36,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:21:36,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:21:36,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c [2023-11-21 22:21:36,612 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/data/4049b094f/6201d41f4bd9441cbc0209d42521eb35/FLAG061378202 [2023-11-21 22:21:36,626 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/data/4049b094f/6201d41f4bd9441cbc0209d42521eb35 [2023-11-21 22:21:36,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:21:36,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:21:36,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:36,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:21:36,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:21:36,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:36" (1/1) ... [2023-11-21 22:21:36,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a93e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:36, skipping insertion in model container [2023-11-21 22:21:36,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:36" (1/1) ... [2023-11-21 22:21:36,703 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:36,914 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_21e7af19-e625-4e97-8369-5a5a7db04110/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c[44494,44507] [2023-11-21 22:21:36,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:36,943 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:21:37,023 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_21e7af19-e625-4e97-8369-5a5a7db04110/sv-benchmarks/c/bitvector/s3_srvr_3a.BV.c.cil.c[44494,44507] [2023-11-21 22:21:37,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:37,050 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:21:37,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37 WrapperNode [2023-11-21 22:21:37,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:37,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:37,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:21:37,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:21:37,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,124 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 664 [2023-11-21 22:21:37,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:37,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:21:37,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:21:37,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:21:37,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,144 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,159 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:21:37,159 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,211 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:21:37,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:21:37,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:21:37,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:21:37,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (1/1) ... [2023-11-21 22:21:37,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:37,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:37,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:21:37,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:21:37,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:21:37,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:21:37,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:21:37,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:21:37,477 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:21:37,479 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:21:37,514 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 22:21:38,238 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##103: assume !false; [2023-11-21 22:21:38,238 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##102: assume false; [2023-11-21 22:21:38,238 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:21:38,615 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:21:38,616 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:21:38,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:38 BoogieIcfgContainer [2023-11-21 22:21:38,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:21:38,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:21:38,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:21:38,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:21:38,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:21:36" (1/3) ... [2023-11-21 22:21:38,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1dcbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:38, skipping insertion in model container [2023-11-21 22:21:38,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:37" (2/3) ... [2023-11-21 22:21:38,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1dcbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:38, skipping insertion in model container [2023-11-21 22:21:38,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:38" (3/3) ... [2023-11-21 22:21:38,632 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a.BV.c.cil.c [2023-11-21 22:21:38,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:21:38,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:21:38,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:21:38,740 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;@55bf47e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:21:38,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:21:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 22:21:38,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:38,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:38,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:38,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:38,761 INFO L85 PathProgramCache]: Analyzing trace with hash -896804227, now seen corresponding path program 1 times [2023-11-21 22:21:38,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:38,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200280634] [2023-11-21 22:21:38,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:38,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:39,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200280634] [2023-11-21 22:21:39,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200280634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:39,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:39,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160666760] [2023-11-21 22:21:39,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:39,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:39,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:39,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:39,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:39,329 INFO L87 Difference]: Start difference. First operand has 106 states, 104 states have (on average 1.7692307692307692) internal successors, (184), 105 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:39,577 INFO L93 Difference]: Finished difference Result 218 states and 378 transitions. [2023-11-21 22:21:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:39,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-21 22:21:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:39,590 INFO L225 Difference]: With dead ends: 218 [2023-11-21 22:21:39,590 INFO L226 Difference]: Without dead ends: 107 [2023-11-21 22:21:39,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:39,598 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:39,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 199 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-21 22:21:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2023-11-21 22:21:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 104 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 150 transitions. [2023-11-21 22:21:39,645 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 150 transitions. Word has length 39 [2023-11-21 22:21:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:39,646 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 150 transitions. [2023-11-21 22:21:39,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:39,647 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 150 transitions. [2023-11-21 22:21:39,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-21 22:21:39,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:39,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:21:39,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:39,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:39,652 INFO L85 PathProgramCache]: Analyzing trace with hash 97246792, now seen corresponding path program 1 times [2023-11-21 22:21:39,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:39,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002425844] [2023-11-21 22:21:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:39,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:39,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:39,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002425844] [2023-11-21 22:21:39,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002425844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:39,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:39,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645854446] [2023-11-21 22:21:39,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:39,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:39,751 INFO L87 Difference]: Start difference. First operand 105 states and 150 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:40,014 INFO L93 Difference]: Finished difference Result 219 states and 319 transitions. [2023-11-21 22:21:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:40,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-21 22:21:40,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:40,018 INFO L225 Difference]: With dead ends: 219 [2023-11-21 22:21:40,020 INFO L226 Difference]: Without dead ends: 126 [2023-11-21 22:21:40,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:40,024 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 8 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:40,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 162 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-21 22:21:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2023-11-21 22:21:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3983739837398375) internal successors, (172), 123 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2023-11-21 22:21:40,054 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 53 [2023-11-21 22:21:40,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:40,055 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2023-11-21 22:21:40,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2023-11-21 22:21:40,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-21 22:21:40,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:40,062 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:40,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:21:40,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:40,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1984233459, now seen corresponding path program 1 times [2023-11-21 22:21:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:40,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692104183] [2023-11-21 22:21:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:40,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 22:21:40,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:40,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692104183] [2023-11-21 22:21:40,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692104183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:40,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:40,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:21:40,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695259005] [2023-11-21 22:21:40,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:40,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:21:40,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:21:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:40,302 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:40,540 INFO L93 Difference]: Finished difference Result 281 states and 407 transitions. [2023-11-21 22:21:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:21:40,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-11-21 22:21:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:40,544 INFO L225 Difference]: With dead ends: 281 [2023-11-21 22:21:40,544 INFO L226 Difference]: Without dead ends: 169 [2023-11-21 22:21:40,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:40,547 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 17 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:40,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 164 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-21 22:21:40,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 162. [2023-11-21 22:21:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.329192546583851) internal successors, (214), 161 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2023-11-21 22:21:40,562 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 70 [2023-11-21 22:21:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:40,563 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2023-11-21 22:21:40,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,564 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2023-11-21 22:21:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-21 22:21:40,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:40,568 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:21:40,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:40,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1388784611, now seen corresponding path program 1 times [2023-11-21 22:21:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853640513] [2023-11-21 22:21:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-21 22:21:40,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:40,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853640513] [2023-11-21 22:21:40,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853640513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:40,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:40,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895476144] [2023-11-21 22:21:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:40,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:40,722 INFO L87 Difference]: Start difference. First operand 162 states and 214 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:40,945 INFO L93 Difference]: Finished difference Result 345 states and 469 transitions. [2023-11-21 22:21:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:40,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-21 22:21:40,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:40,951 INFO L225 Difference]: With dead ends: 345 [2023-11-21 22:21:40,952 INFO L226 Difference]: Without dead ends: 195 [2023-11-21 22:21:40,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:40,965 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 22 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:40,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 173 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:40,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-21 22:21:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 185. [2023-11-21 22:21:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.3043478260869565) internal successors, (240), 184 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 240 transitions. [2023-11-21 22:21:40,984 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 240 transitions. Word has length 90 [2023-11-21 22:21:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:40,987 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 240 transitions. [2023-11-21 22:21:40,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 240 transitions. [2023-11-21 22:21:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-21 22:21:40,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:40,998 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:40,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:21:40,999 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:40,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:41,000 INFO L85 PathProgramCache]: Analyzing trace with hash 22330902, now seen corresponding path program 1 times [2023-11-21 22:21:41,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:41,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363978622] [2023-11-21 22:21:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:41,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:41,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363978622] [2023-11-21 22:21:41,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363978622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:41,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043047721] [2023-11-21 22:21:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:41,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:41,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:41,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:41,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:21:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:41,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:21:41,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:41,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-21 22:21:41,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043047721] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:41,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:21:41,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2023-11-21 22:21:41,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045539268] [2023-11-21 22:21:41,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:41,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:41,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:41,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:21:41,928 INFO L87 Difference]: Start difference. First operand 185 states and 240 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:42,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:42,006 INFO L93 Difference]: Finished difference Result 357 states and 467 transitions. [2023-11-21 22:21:42,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:42,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-11-21 22:21:42,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:42,009 INFO L225 Difference]: With dead ends: 357 [2023-11-21 22:21:42,009 INFO L226 Difference]: Without dead ends: 355 [2023-11-21 22:21:42,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:21:42,011 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:42,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 238 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:21:42,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-21 22:21:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2023-11-21 22:21:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.3144475920679888) internal successors, (464), 353 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 464 transitions. [2023-11-21 22:21:42,032 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 464 transitions. Word has length 108 [2023-11-21 22:21:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:42,032 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 464 transitions. [2023-11-21 22:21:42,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 464 transitions. [2023-11-21 22:21:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-21 22:21:42,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:42,035 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:42,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:42,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:42,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:42,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1171987409, now seen corresponding path program 1 times [2023-11-21 22:21:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:42,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984037408] [2023-11-21 22:21:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:42,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:42,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:21:42,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415383318] [2023-11-21 22:21:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:42,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:42,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:42,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:42,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:21:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:42,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:21:42,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-21 22:21:42,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:42,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:42,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984037408] [2023-11-21 22:21:42,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:21:42,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415383318] [2023-11-21 22:21:42,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415383318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:42,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:42,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:42,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724530178] [2023-11-21 22:21:42,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:42,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:42,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:42,508 INFO L87 Difference]: Start difference. First operand 354 states and 464 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:42,724 INFO L93 Difference]: Finished difference Result 778 states and 1060 transitions. [2023-11-21 22:21:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:42,725 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-11-21 22:21:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:42,728 INFO L225 Difference]: With dead ends: 778 [2023-11-21 22:21:42,728 INFO L226 Difference]: Without dead ends: 436 [2023-11-21 22:21:42,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:42,730 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:42,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 164 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:42,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-21 22:21:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 432. [2023-11-21 22:21:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.271461716937355) internal successors, (548), 431 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 548 transitions. [2023-11-21 22:21:42,750 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 548 transitions. Word has length 142 [2023-11-21 22:21:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:42,751 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 548 transitions. [2023-11-21 22:21:42,751 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:42,751 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 548 transitions. [2023-11-21 22:21:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-21 22:21:42,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:42,754 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:42,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:42,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 22:21:42,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:42,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:42,973 INFO L85 PathProgramCache]: Analyzing trace with hash 293350500, now seen corresponding path program 1 times [2023-11-21 22:21:42,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:42,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437495920] [2023-11-21 22:21:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:42,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:43,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:21:43,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044347991] [2023-11-21 22:21:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:43,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:43,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:43,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:43,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:21:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:43,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:21:43,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-21 22:21:43,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:43,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437495920] [2023-11-21 22:21:43,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:21:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044347991] [2023-11-21 22:21:43,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044347991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:43,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:43,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:43,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439884539] [2023-11-21 22:21:43,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:43,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:43,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:43,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:43,199 INFO L87 Difference]: Start difference. First operand 432 states and 548 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:43,370 INFO L93 Difference]: Finished difference Result 950 states and 1254 transitions. [2023-11-21 22:21:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:43,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2023-11-21 22:21:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:43,374 INFO L225 Difference]: With dead ends: 950 [2023-11-21 22:21:43,374 INFO L226 Difference]: Without dead ends: 506 [2023-11-21 22:21:43,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:43,376 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 58 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:43,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 124 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-21 22:21:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 490. [2023-11-21 22:21:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.3047034764826175) internal successors, (638), 489 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 638 transitions. [2023-11-21 22:21:43,392 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 638 transitions. Word has length 148 [2023-11-21 22:21:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:43,392 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 638 transitions. [2023-11-21 22:21:43,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 638 transitions. [2023-11-21 22:21:43,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-21 22:21:43,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:43,396 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:43,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:43,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:43,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:43,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1028881137, now seen corresponding path program 1 times [2023-11-21 22:21:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:43,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205847738] [2023-11-21 22:21:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:43,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205847738] [2023-11-21 22:21:43,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-21 22:21:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974215171] [2023-11-21 22:21:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:43,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:43,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:43,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:43,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:21:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:43,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:21:43,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-21 22:21:43,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:43,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974215171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:43,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:43,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:43,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690081384] [2023-11-21 22:21:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:43,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:43,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:43,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:43,852 INFO L87 Difference]: Start difference. First operand 490 states and 638 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:44,054 INFO L93 Difference]: Finished difference Result 1054 states and 1412 transitions. [2023-11-21 22:21:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:44,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-11-21 22:21:44,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:44,058 INFO L225 Difference]: With dead ends: 1054 [2023-11-21 22:21:44,058 INFO L226 Difference]: Without dead ends: 552 [2023-11-21 22:21:44,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:44,059 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 61 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:44,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 116 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-11-21 22:21:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 544. [2023-11-21 22:21:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 1.3406998158379373) internal successors, (728), 543 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 728 transitions. [2023-11-21 22:21:44,076 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 728 transitions. Word has length 170 [2023-11-21 22:21:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:44,076 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 728 transitions. [2023-11-21 22:21:44,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 728 transitions. [2023-11-21 22:21:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-21 22:21:44,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:44,080 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:44,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:44,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:44,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:44,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1621529413, now seen corresponding path program 1 times [2023-11-21 22:21:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063700602] [2023-11-21 22:21:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:44,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063700602] [2023-11-21 22:21:44,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-21 22:21:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366644740] [2023-11-21 22:21:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:44,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:44,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:44,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:44,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:21:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:44,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:21:44,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-21 22:21:44,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:44,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366644740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:44,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:44,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:44,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797767796] [2023-11-21 22:21:44,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:44,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:44,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:44,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:44,534 INFO L87 Difference]: Start difference. First operand 544 states and 728 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:44,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:44,717 INFO L93 Difference]: Finished difference Result 1216 states and 1678 transitions. [2023-11-21 22:21:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:44,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2023-11-21 22:21:44,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:44,722 INFO L225 Difference]: With dead ends: 1216 [2023-11-21 22:21:44,723 INFO L226 Difference]: Without dead ends: 676 [2023-11-21 22:21:44,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:44,726 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:44,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 148 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-11-21 22:21:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 652. [2023-11-21 22:21:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 1.2749615975422428) internal successors, (830), 651 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 830 transitions. [2023-11-21 22:21:44,745 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 830 transitions. Word has length 175 [2023-11-21 22:21:44,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:44,746 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 830 transitions. [2023-11-21 22:21:44,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 830 transitions. [2023-11-21 22:21:44,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-21 22:21:44,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:44,750 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:44,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:44,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:44,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:44,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1336313552, now seen corresponding path program 1 times [2023-11-21 22:21:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:44,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722171593] [2023-11-21 22:21:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:44,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:21:44,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702597043] [2023-11-21 22:21:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:44,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:44,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:45,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:45,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:21:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:45,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:21:45,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-21 22:21:45,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:45,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:45,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722171593] [2023-11-21 22:21:45,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:21:45,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702597043] [2023-11-21 22:21:45,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702597043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:45,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:45,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:21:45,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542366453] [2023-11-21 22:21:45,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:45,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:21:45,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:45,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:21:45,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:45,336 INFO L87 Difference]: Start difference. First operand 652 states and 830 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:45,660 INFO L93 Difference]: Finished difference Result 1397 states and 1816 transitions. [2023-11-21 22:21:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:21:45,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2023-11-21 22:21:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:45,666 INFO L225 Difference]: With dead ends: 1397 [2023-11-21 22:21:45,666 INFO L226 Difference]: Without dead ends: 696 [2023-11-21 22:21:45,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:45,668 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 39 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:45,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 227 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:21:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-21 22:21:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 673. [2023-11-21 22:21:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 1.2648809523809523) internal successors, (850), 672 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 850 transitions. [2023-11-21 22:21:45,694 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 850 transitions. Word has length 202 [2023-11-21 22:21:45,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:45,697 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 850 transitions. [2023-11-21 22:21:45,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 850 transitions. [2023-11-21 22:21:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-21 22:21:45,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:45,701 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:45,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-21 22:21:45,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 22:21:45,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:45,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:45,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1719755155, now seen corresponding path program 1 times [2023-11-21 22:21:45,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:45,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277196984] [2023-11-21 22:21:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:45,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:45,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:21:45,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800382386] [2023-11-21 22:21:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:45,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:45,960 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:46,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:21:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:46,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:21:46,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-21 22:21:46,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-21 22:21:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277196984] [2023-11-21 22:21:46,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:21:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800382386] [2023-11-21 22:21:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800382386] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:46,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:21:46,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-21 22:21:46,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568913520] [2023-11-21 22:21:46,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:46,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:21:46,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:21:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:21:46,323 INFO L87 Difference]: Start difference. First operand 673 states and 850 transitions. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:46,863 INFO L93 Difference]: Finished difference Result 2199 states and 2828 transitions. [2023-11-21 22:21:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:21:46,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2023-11-21 22:21:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:46,873 INFO L225 Difference]: With dead ends: 2199 [2023-11-21 22:21:46,873 INFO L226 Difference]: Without dead ends: 1492 [2023-11-21 22:21:46,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:21:46,875 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 327 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:46,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 386 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:46,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2023-11-21 22:21:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1023. [2023-11-21 22:21:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 1.3170254403131116) internal successors, (1346), 1022 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1346 transitions. [2023-11-21 22:21:46,907 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1346 transitions. Word has length 240 [2023-11-21 22:21:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:46,908 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1346 transitions. [2023-11-21 22:21:46,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:46,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1346 transitions. [2023-11-21 22:21:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-21 22:21:46,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:46,912 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:46,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:47,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 22:21:47,136 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:47,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:47,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1802856787, now seen corresponding path program 1 times [2023-11-21 22:21:47,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:47,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578462635] [2023-11-21 22:21:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:47,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:47,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:21:47,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726325368] [2023-11-21 22:21:47,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:47,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:47,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:47,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:21:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:47,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:21:47,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 317 proven. 176 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-21 22:21:47,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 368 proven. 125 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-21 22:21:48,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578462635] [2023-11-21 22:21:48,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:21:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726325368] [2023-11-21 22:21:48,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726325368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:48,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:21:48,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-21 22:21:48,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264089356] [2023-11-21 22:21:48,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:48,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:21:48,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:48,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:21:48,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:21:48,008 INFO L87 Difference]: Start difference. First operand 1023 states and 1346 transitions. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:48,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:48,819 INFO L93 Difference]: Finished difference Result 2918 states and 3860 transitions. [2023-11-21 22:21:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:21:48,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2023-11-21 22:21:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:48,827 INFO L225 Difference]: With dead ends: 2918 [2023-11-21 22:21:48,827 INFO L226 Difference]: Without dead ends: 1345 [2023-11-21 22:21:48,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:21:48,830 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 311 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:48,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 467 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:21:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2023-11-21 22:21:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1252. [2023-11-21 22:21:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.3189448441247003) internal successors, (1650), 1251 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1650 transitions. [2023-11-21 22:21:48,865 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1650 transitions. Word has length 246 [2023-11-21 22:21:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:48,866 INFO L495 AbstractCegarLoop]: Abstraction has 1252 states and 1650 transitions. [2023-11-21 22:21:48,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1650 transitions. [2023-11-21 22:21:48,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2023-11-21 22:21:48,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:48,871 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:48,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:49,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-21 22:21:49,093 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:49,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:49,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1781280178, now seen corresponding path program 1 times [2023-11-21 22:21:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:49,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956960672] [2023-11-21 22:21:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:49,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:49,127 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:21:49,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219437176] [2023-11-21 22:21:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:49,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:49,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:49,129 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:49,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:21:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:49,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:21:49,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2023-11-21 22:21:49,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:49,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:49,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956960672] [2023-11-21 22:21:49,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:21:49,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219437176] [2023-11-21 22:21:49,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219437176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:49,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:49,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229679425] [2023-11-21 22:21:49,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:49,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:49,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:49,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:49,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:49,339 INFO L87 Difference]: Start difference. First operand 1252 states and 1650 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:49,518 INFO L93 Difference]: Finished difference Result 2662 states and 3508 transitions. [2023-11-21 22:21:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:49,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2023-11-21 22:21:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:49,526 INFO L225 Difference]: With dead ends: 2662 [2023-11-21 22:21:49,527 INFO L226 Difference]: Without dead ends: 1422 [2023-11-21 22:21:49,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:49,529 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 8 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:49,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 171 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2023-11-21 22:21:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1412. [2023-11-21 22:21:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 1.293408929836995) internal successors, (1825), 1411 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1825 transitions. [2023-11-21 22:21:49,593 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1825 transitions. Word has length 302 [2023-11-21 22:21:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:49,594 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 1825 transitions. [2023-11-21 22:21:49,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1825 transitions. [2023-11-21 22:21:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-11-21 22:21:49,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:49,602 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:49,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:49,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:49,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:49,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:49,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1705388386, now seen corresponding path program 1 times [2023-11-21 22:21:49,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:49,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221478269] [2023-11-21 22:21:49,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:49,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:49,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:21:49,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768851817] [2023-11-21 22:21:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:49,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:49,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:49,873 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:49,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 22:21:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:50,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:21:50,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2023-11-21 22:21:50,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2023-11-21 22:21:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221478269] [2023-11-21 22:21:51,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:21:51,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768851817] [2023-11-21 22:21:51,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768851817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:51,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:21:51,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2023-11-21 22:21:51,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668599225] [2023-11-21 22:21:51,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:51,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:21:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:21:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:21:51,927 INFO L87 Difference]: Start difference. First operand 1412 states and 1825 transitions. Second operand has 8 states, 8 states have (on average 32.25) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:52,137 INFO L93 Difference]: Finished difference Result 2522 states and 3259 transitions. [2023-11-21 22:21:52,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:52,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2023-11-21 22:21:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:52,149 INFO L225 Difference]: With dead ends: 2522 [2023-11-21 22:21:52,149 INFO L226 Difference]: Without dead ends: 2027 [2023-11-21 22:21:52,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:21:52,151 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 293 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:52,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1144 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2023-11-21 22:21:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2000. [2023-11-21 22:21:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 1.294647323661831) internal successors, (2588), 1999 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2588 transitions. [2023-11-21 22:21:52,206 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2588 transitions. Word has length 332 [2023-11-21 22:21:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:52,207 INFO L495 AbstractCegarLoop]: Abstraction has 2000 states and 2588 transitions. [2023-11-21 22:21:52,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2588 transitions. [2023-11-21 22:21:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-11-21 22:21:52,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:52,211 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 9, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:52,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:52,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:52,433 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:52,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:52,433 INFO L85 PathProgramCache]: Analyzing trace with hash 69215541, now seen corresponding path program 1 times [2023-11-21 22:21:52,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:52,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804894146] [2023-11-21 22:21:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:52,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:52,475 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:21:52,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318193915] [2023-11-21 22:21:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:52,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:52,481 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:52,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 22:21:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:52,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:21:52,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2603 backedges. 1068 proven. 691 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2023-11-21 22:21:53,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2603 backedges. 1176 proven. 583 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2023-11-21 22:21:53,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804894146] [2023-11-21 22:21:53,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:21:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318193915] [2023-11-21 22:21:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318193915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:53,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:21:53,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-21 22:21:53,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66660904] [2023-11-21 22:21:53,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:53,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:21:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:21:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:21:53,887 INFO L87 Difference]: Start difference. First operand 2000 states and 2588 transitions. Second operand has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:54,970 INFO L93 Difference]: Finished difference Result 3736 states and 4805 transitions. [2023-11-21 22:21:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:21:54,971 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 470 [2023-11-21 22:21:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:54,981 INFO L225 Difference]: With dead ends: 3736 [2023-11-21 22:21:54,981 INFO L226 Difference]: Without dead ends: 1652 [2023-11-21 22:21:54,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:21:54,984 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 558 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:54,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 682 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:21:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2023-11-21 22:21:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 851. [2023-11-21 22:21:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 850 states have (on average 1.251764705882353) internal successors, (1064), 850 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1064 transitions. [2023-11-21 22:21:55,024 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1064 transitions. Word has length 470 [2023-11-21 22:21:55,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:55,025 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1064 transitions. [2023-11-21 22:21:55,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:55,025 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1064 transitions. [2023-11-21 22:21:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2023-11-21 22:21:55,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:55,033 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 18, 18, 17, 17, 16, 16, 15, 15, 14, 14, 14, 14, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:55,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:55,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 22:21:55,260 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:55,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:55,261 INFO L85 PathProgramCache]: Analyzing trace with hash -602255338, now seen corresponding path program 1 times [2023-11-21 22:21:55,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:55,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13671926] [2023-11-21 22:21:55,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:55,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:55,305 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:21:55,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508620362] [2023-11-21 22:21:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:55,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:55,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:55,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:55,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 22:21:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:55,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:21:55,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 2132 proven. 0 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2023-11-21 22:21:55,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:55,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:55,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13671926] [2023-11-21 22:21:55,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:21:55,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508620362] [2023-11-21 22:21:55,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508620362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:55,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:55,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:55,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471198134] [2023-11-21 22:21:55,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:55,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:55,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:55,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:55,578 INFO L87 Difference]: Start difference. First operand 851 states and 1064 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:55,728 INFO L93 Difference]: Finished difference Result 1312 states and 1652 transitions. [2023-11-21 22:21:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:55,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 573 [2023-11-21 22:21:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:55,730 INFO L225 Difference]: With dead ends: 1312 [2023-11-21 22:21:55,730 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 22:21:55,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:55,732 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 26 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:55,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 163 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:21:55,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 22:21:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 22:21:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 22:21:55,735 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 573 [2023-11-21 22:21:55,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:55,735 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:21:55,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 22:21:55,736 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 22:21:55,741 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:21:55,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:55,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:55,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 22:21:56,734 INFO L899 garLoopResultBuilder]: For program point L564(lines 564 568) no Hoare annotation was computed. [2023-11-21 22:21:56,734 INFO L899 garLoopResultBuilder]: For program point L399-4(lines 399 405) no Hoare annotation was computed. [2023-11-21 22:21:56,734 INFO L899 garLoopResultBuilder]: For program point L366-4(lines 366 385) no Hoare annotation was computed. [2023-11-21 22:21:56,734 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8593#1(lines 184 610) no Hoare annotation was computed. [2023-11-21 22:21:56,734 INFO L899 garLoopResultBuilder]: For program point L499(lines 499 503) no Hoare annotation was computed. [2023-11-21 22:21:56,734 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8529#1(lines 157 619) no Hoare annotation was computed. [2023-11-21 22:21:56,734 INFO L899 garLoopResultBuilder]: For program point L202(lines 202 604) no Hoare annotation was computed. [2023-11-21 22:21:56,734 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 615) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point L136(lines 136 626) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point L467(lines 467 471) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8497#1(lines 145 623) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point L335-3(lines 335 344) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point L335-5(lines 335 344) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point L666(lines 74 683) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point $Ultimate##203(lines 397 434) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point L205(lines 205 603) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point L172(lines 172 614) no Hoare annotation was computed. [2023-11-21 22:21:56,735 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 625) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L635(lines 635 663) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L239(lines 239 256) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L239-2(lines 219 596) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L636(lines 636 660) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L537-2(lines 219 596) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 343) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L372-3(lines 372 382) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L637(lines 637 646) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L637-2(lines 636 658) no Hoare annotation was computed. [2023-11-21 22:21:56,736 INFO L899 garLoopResultBuilder]: For program point L472(lines 472 483) no Hoare annotation was computed. [2023-11-21 22:21:56,737 INFO L899 garLoopResultBuilder]: For program point L439(lines 439 443) no Hoare annotation was computed. [2023-11-21 22:21:56,737 INFO L899 garLoopResultBuilder]: For program point L373(lines 356 391) no Hoare annotation was computed. [2023-11-21 22:21:56,737 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 246) no Hoare annotation was computed. [2023-11-21 22:21:56,737 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 602) no Hoare annotation was computed. [2023-11-21 22:21:56,737 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 613) no Hoare annotation was computed. [2023-11-21 22:21:56,737 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 624) no Hoare annotation was computed. [2023-11-21 22:21:56,737 INFO L895 garLoopResultBuilder]: At program point L109-2(lines 109 665) the Hoare annotation is: (let ((.cse3 (not (= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 8640))) (.cse2 (= 8496 |ULTIMATE.start_ssl3_accept_~s__state~0#1|)) (.cse1 (= 0 |ULTIMATE.start_ssl3_accept_~s__hit~0#1|)) (.cse0 (= 2 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|))) (or (and (= 8464 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 0)) (and .cse0 (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8512)) (and (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8448) (= 3 |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1|) .cse1) (and .cse2 .cse0) (and (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8656) .cse0 .cse3) (and .cse0 (<= 8544 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8560)) (and (<= 8672 |ULTIMATE.start_ssl3_accept_~s__state~0#1|) (= 3 |ULTIMATE.start_ssl3_accept_~blastFlag~0#1|) .cse3) (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 3) (and .cse0 (<= |ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0#1| 8576) (<= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8655)) (and .cse2 (= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 1)) (and (<= |ULTIMATE.start_ssl3_accept_~blastFlag~0#1| 3) (not .cse1)) (and (= |ULTIMATE.start_ssl3_accept_~s__state~0#1| 8528) .cse0))) [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point L639(lines 639 643) no Hoare annotation was computed. [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 379) no Hoare annotation was computed. [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point L408-3(lines 408 428) no Hoare annotation was computed. [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point L409-4(lines 409 415) no Hoare annotation was computed. [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8481#1(lines 127 629) no Hoare annotation was computed. [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point L211(lines 211 601) no Hoare annotation was computed. [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 612) no Hoare annotation was computed. [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point L145(lines 145 623) no Hoare annotation was computed. [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 634) no Hoare annotation was computed. [2023-11-21 22:21:56,738 INFO L899 garLoopResultBuilder]: For program point L476(lines 476 480) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L510-2(lines 219 596) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 252) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L181(lines 181 611) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L148(lines 148 622) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L115(lines 115 633) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L282(lines 282 286) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8657#1(lines 202 604) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L316-2(lines 219 596) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 610) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L151(lines 151 621) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 632) no Hoare annotation was computed. [2023-11-21 22:21:56,739 INFO L899 garLoopResultBuilder]: For program point L449-1(lines 449 461) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L681(lines 74 683) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L549(lines 549 554) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L417(lines 408 428) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L351-6(lines 219 596) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L187(lines 187 609) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 620) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L121(lines 121 631) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L452(lines 452 457) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L420(lines 420 424) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point L222(lines 115 633) no Hoare annotation was computed. [2023-11-21 22:21:56,740 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8577#1(lines 178 612) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point L190(lines 190 608) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point L157(lines 157 619) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 630) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8641#1(lines 196 606) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point L488(lines 488 492) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_ERROR#1(lines 74 683) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point L93-5(lines 74 683) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point L193(lines 193 607) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point L160(lines 160 618) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point L127(lines 127 629) no Hoare annotation was computed. [2023-11-21 22:21:56,741 INFO L899 garLoopResultBuilder]: For program point $Ultimate##139(line 335) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8673#1(lines 208 602) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point L359-4(lines 359 390) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point L227-2(lines 219 596) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8609#1(lines 190 608) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8466#1(lines 136 626) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point L559(lines 559 563) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point $Ultimate##285(lines 635 663) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 606) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point L163(lines 163 617) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point L130(lines 130 628) no Hoare annotation was computed. [2023-11-21 22:21:56,742 INFO L899 garLoopResultBuilder]: For program point L362(lines 362 389) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point L362-1(lines 362 389) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point $Ultimate##217(line 408) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 677) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 386) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point L264(lines 264 276) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point ssl3_accept_switch_1_8561#1(lines 169 615) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point L265(lines 265 270) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 605) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point L166(lines 166 616) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 627) no Hoare annotation was computed. [2023-11-21 22:21:56,743 INFO L899 garLoopResultBuilder]: For program point $Ultimate##239(lines 449 461) no Hoare annotation was computed. [2023-11-21 22:21:56,744 INFO L899 garLoopResultBuilder]: For program point L530(lines 530 535) no Hoare annotation was computed. [2023-11-21 22:21:56,744 INFO L899 garLoopResultBuilder]: For program point L398(lines 398 429) no Hoare annotation was computed. [2023-11-21 22:21:56,744 INFO L899 garLoopResultBuilder]: For program point L299-2(lines 219 596) no Hoare annotation was computed. [2023-11-21 22:21:56,747 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:56,750 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:21:56,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:21:56 BoogieIcfgContainer [2023-11-21 22:21:56,764 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:21:56,764 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:21:56,764 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:21:56,765 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:21:56,765 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:38" (3/4) ... [2023-11-21 22:21:56,767 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:21:56,787 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 56 nodes and edges [2023-11-21 22:21:56,789 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-21 22:21:56,790 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 22:21:56,792 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:21:56,951 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:21:56,952 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:21:56,952 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:21:56,953 INFO L158 Benchmark]: Toolchain (without parser) took 20322.38ms. Allocated memory was 125.8MB in the beginning and 297.8MB in the end (delta: 172.0MB). Free memory was 94.4MB in the beginning and 98.2MB in the end (delta: -3.8MB). Peak memory consumption was 170.6MB. Max. memory is 16.1GB. [2023-11-21 22:21:56,953 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:21:56,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.17ms. Allocated memory is still 125.8MB. Free memory was 94.4MB in the beginning and 78.3MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:21:56,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.01ms. Allocated memory is still 125.8MB. Free memory was 78.3MB in the beginning and 74.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:21:56,954 INFO L158 Benchmark]: Boogie Preprocessor took 91.46ms. Allocated memory is still 125.8MB. Free memory was 74.9MB in the beginning and 71.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:21:56,955 INFO L158 Benchmark]: RCFGBuilder took 1400.57ms. Allocated memory was 125.8MB in the beginning and 169.9MB in the end (delta: 44.0MB). Free memory was 71.3MB in the beginning and 124.7MB in the end (delta: -53.4MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2023-11-21 22:21:56,955 INFO L158 Benchmark]: TraceAbstraction took 18140.41ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 123.6MB in the beginning and 109.7MB in the end (delta: 13.9MB). Peak memory consumption was 165.3MB. Max. memory is 16.1GB. [2023-11-21 22:21:56,955 INFO L158 Benchmark]: Witness Printer took 187.61ms. Allocated memory is still 297.8MB. Free memory was 109.7MB in the beginning and 98.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 22:21:56,957 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.17ms. Allocated memory is still 125.8MB. Free memory was 94.4MB in the beginning and 78.3MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.01ms. Allocated memory is still 125.8MB. Free memory was 78.3MB in the beginning and 74.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.46ms. Allocated memory is still 125.8MB. Free memory was 74.9MB in the beginning and 71.3MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1400.57ms. Allocated memory was 125.8MB in the beginning and 169.9MB in the end (delta: 44.0MB). Free memory was 71.3MB in the beginning and 124.7MB in the end (delta: -53.4MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * TraceAbstraction took 18140.41ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 123.6MB in the beginning and 109.7MB in the end (delta: 13.9MB). Peak memory consumption was 165.3MB. Max. memory is 16.1GB. * Witness Printer took 187.61ms. Allocated memory is still 297.8MB. Free memory was 109.7MB in the beginning and 98.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 677]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 106 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.0s, OverallIterations: 16, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1882 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1882 mSDsluCounter, 4728 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2529 mSDsCounter, 559 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4292 IncrementalHoareTripleChecker+Invalid, 4851 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 559 mSolverCounterUnsat, 2199 mSDtfsCounter, 4292 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4535 GetRequests, 4476 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2000occurred in iteration=14, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 1497 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 49 NumberOfFragments, 99 HoareAnnotationTreeSize, 1 FomulaSimplifications, 1019 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 1 FomulaSimplificationsInter, 751 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 3813 NumberOfCodeBlocks, 3813 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 4842 ConstructedInterpolants, 0 QuantifiedInterpolants, 12262 SizeOfPredicates, 11 NumberOfNonLiveVariables, 5285 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 22 InterpolantComputations, 12 PerfectInterpolantSequences, 14578/17329 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: (((((((((((((8464 == s__state) && (blastFlag == 0)) || ((2 == blastFlag) && (s__state == 8512))) || (((s__state <= 8448) && (3 == s__s3__tmp__next_state___0)) && (0 == s__hit))) || ((8496 == s__state) && (2 == blastFlag))) || (((s__state == 8656) && (2 == blastFlag)) && !((s__s3__tmp__next_state___0 == 8640)))) || (((2 == blastFlag) && (8544 <= s__state)) && (s__state <= 8560))) || (((8672 <= s__state) && (3 == blastFlag)) && !((s__s3__tmp__next_state___0 == 8640)))) || (s__state == 3)) || (((2 == blastFlag) && (s__s3__tmp__next_state___0 <= 8576)) && (s__state <= 8655))) || ((8496 == s__state) && (blastFlag == 1))) || ((blastFlag <= 3) && !((0 == s__hit)))) || ((s__state == 8528) && (2 == blastFlag))) RESULT: Ultimate proved your program to be correct! [2023-11-21 22:21:57,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21e7af19-e625-4e97-8369-5a5a7db04110/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE