./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/sep10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sep10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX --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 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:20:27,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:20:27,794 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 19:20:27,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:20:27,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:20:27,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:20:27,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:20:27,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:20:27,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:20:27,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:20:27,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:20:27,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:20:27,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:20:27,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:20:27,847 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:20:27,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:20:27,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:20:27,849 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:20:27,853 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:20:27,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:20:27,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:20:27,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:20:27,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:20:27,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:20:27,855 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:20:27,855 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:20:27,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:20:27,856 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:20:27,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:20:27,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:20:27,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:20:27,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:20:27,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:20:27,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:20:27,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:20:27,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:20:27,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:20:27,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:20:27,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:20:27,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:20:27,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:20:27,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:20:27,862 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_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 [2024-11-08 19:20:28,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:20:28,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:20:28,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:20:28,165 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:20:28,165 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:20:28,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/reducercommutativity/sep10-2.i Unable to find full path for "g++" [2024-11-08 19:20:30,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:20:30,313 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:20:30,313 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/sv-benchmarks/c/reducercommutativity/sep10-2.i [2024-11-08 19:20:30,320 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/data/71a99893b/ed551096b7f941baa5c799b73e640d2f/FLAG648d2f49e [2024-11-08 19:20:30,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/data/71a99893b/ed551096b7f941baa5c799b73e640d2f [2024-11-08 19:20:30,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:20:30,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:20:30,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:20:30,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:20:30,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:20:30,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:20:30" (1/1) ... [2024-11-08 19:20:30,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c3c0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:30, skipping insertion in model container [2024-11-08 19:20:30,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:20:30" (1/1) ... [2024-11-08 19:20:30,745 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:20:30,994 WARN L250 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_98dc6228-2346-4927-8802-c55815e832af/sv-benchmarks/c/reducercommutativity/sep10-2.i[1293,1306] [2024-11-08 19:20:30,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:20:31,008 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:20:31,029 WARN L250 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_98dc6228-2346-4927-8802-c55815e832af/sv-benchmarks/c/reducercommutativity/sep10-2.i[1293,1306] [2024-11-08 19:20:31,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:20:31,048 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:20:31,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31 WrapperNode [2024-11-08 19:20:31,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:20:31,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:20:31,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:20:31,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:20:31,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,082 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-08 19:20:31,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:20:31,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:20:31,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:20:31,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:20:31,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,111 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-08 19:20:31,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:20:31,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:20:31,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:20:31,127 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:20:31,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (1/1) ... [2024-11-08 19:20:31,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:20:31,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:31,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:20:31,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:20:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:20:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:20:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 19:20:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 19:20:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 19:20:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 19:20:31,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:20:31,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:20:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 19:20:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 19:20:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 19:20:31,196 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2024-11-08 19:20:31,196 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2024-11-08 19:20:31,321 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:20:31,323 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:20:31,523 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-08 19:20:31,523 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:20:31,537 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:20:31,538 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:20:31,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:20:31 BoogieIcfgContainer [2024-11-08 19:20:31,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:20:31,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:20:31,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:20:31,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:20:31,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:20:30" (1/3) ... [2024-11-08 19:20:31,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec2d9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:20:31, skipping insertion in model container [2024-11-08 19:20:31,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:31" (2/3) ... [2024-11-08 19:20:31,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec2d9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:20:31, skipping insertion in model container [2024-11-08 19:20:31,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:20:31" (3/3) ... [2024-11-08 19:20:31,550 INFO L112 eAbstractionObserver]: Analyzing ICFG sep10-2.i [2024-11-08 19:20:31,571 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:20:31,571 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:20:31,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:20:31,671 INFO L333 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, 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;@24fc783d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:20:31,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 19:20:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 19:20:31,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:31,688 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:31,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:31,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash 768534060, now seen corresponding path program 1 times [2024-11-08 19:20:31,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:31,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125628671] [2024-11-08 19:20:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:31,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:32,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 19:20:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:32,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 19:20:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:32,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 19:20:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 19:20:32,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:32,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125628671] [2024-11-08 19:20:32,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125628671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:32,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996445974] [2024-11-08 19:20:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:32,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:32,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:32,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:32,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:20:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:32,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 19:20:32,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 19:20:32,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:20:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996445974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:32,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:20:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 19:20:32,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905519708] [2024-11-08 19:20:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:32,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:32,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:32,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:32,384 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 19:20:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:32,436 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2024-11-08 19:20:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:32,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-08 19:20:32,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:32,450 INFO L225 Difference]: With dead ends: 56 [2024-11-08 19:20:32,451 INFO L226 Difference]: Without dead ends: 27 [2024-11-08 19:20:32,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:32,460 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:32,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-08 19:20:32,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-08 19:20:32,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-11-08 19:20:32,518 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 29 [2024-11-08 19:20:32,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:32,520 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-11-08 19:20:32,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 19:20:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-11-08 19:20:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 19:20:32,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:32,525 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:32,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:20:32,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-08 19:20:32,727 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:32,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 635727623, now seen corresponding path program 1 times [2024-11-08 19:20:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:32,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141095839] [2024-11-08 19:20:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:32,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:32,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 19:20:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:32,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 19:20:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:32,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-08 19:20:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 19:20:32,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:32,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141095839] [2024-11-08 19:20:32,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141095839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:32,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27642318] [2024-11-08 19:20:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:32,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:32,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:32,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:32,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:20:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:33,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 19:20:33,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 19:20:33,168 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:20:33,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27642318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:33,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:20:33,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 19:20:33,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032789149] [2024-11-08 19:20:33,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:33,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:33,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:33,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:33,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:33,171 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 19:20:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:33,200 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2024-11-08 19:20:33,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:33,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-08 19:20:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:33,202 INFO L225 Difference]: With dead ends: 50 [2024-11-08 19:20:33,202 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 19:20:33,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:33,204 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:33,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 19:20:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-08 19:20:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-11-08 19:20:33,216 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 31 [2024-11-08 19:20:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:33,217 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-11-08 19:20:33,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 19:20:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-11-08 19:20:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 19:20:33,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:33,221 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:33,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:20:33,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:33,422 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:33,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1794414142, now seen corresponding path program 1 times [2024-11-08 19:20:33,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:33,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223294462] [2024-11-08 19:20:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:33,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:33,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 19:20:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:33,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 19:20:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:33,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 19:20:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 19:20:33,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223294462] [2024-11-08 19:20:33,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223294462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339773073] [2024-11-08 19:20:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:33,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:33,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:33,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:33,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:20:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:33,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 19:20:33,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 19:20:33,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:20:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339773073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:33,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:20:33,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 19:20:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567502119] [2024-11-08 19:20:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:33,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:20:33,829 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 19:20:33,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:33,851 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-11-08 19:20:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:33,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-11-08 19:20:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:33,853 INFO L225 Difference]: With dead ends: 47 [2024-11-08 19:20:33,853 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 19:20:33,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:20:33,855 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:33,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 57 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:33,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 19:20:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-08 19:20:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-11-08 19:20:33,861 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 43 [2024-11-08 19:20:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:33,863 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-11-08 19:20:33,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 19:20:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-11-08 19:20:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 19:20:33,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:33,865 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:33,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 19:20:34,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:34,066 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:34,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1805002823, now seen corresponding path program 1 times [2024-11-08 19:20:34,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:34,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699477410] [2024-11-08 19:20:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:34,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:34,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 19:20:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:34,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 19:20:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:34,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 19:20:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 19:20:34,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:34,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699477410] [2024-11-08 19:20:34,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699477410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:34,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396334400] [2024-11-08 19:20:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:34,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:34,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:34,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:34,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:20:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:34,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:20:34,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 19:20:34,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 19:20:34,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396334400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:34,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:34,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-08 19:20:34,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025315008] [2024-11-08 19:20:34,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:34,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 19:20:34,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:34,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 19:20:34,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:20:34,468 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 19:20:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:34,550 INFO L93 Difference]: Finished difference Result 67 states and 93 transitions. [2024-11-08 19:20:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:20:34,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2024-11-08 19:20:34,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:34,552 INFO L225 Difference]: With dead ends: 67 [2024-11-08 19:20:34,552 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 19:20:34,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:20:34,554 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:34,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 97 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:20:34,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 19:20:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-08 19:20:34,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-11-08 19:20:34,567 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 45 [2024-11-08 19:20:34,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:34,567 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-11-08 19:20:34,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 19:20:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-11-08 19:20:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 19:20:34,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:34,572 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:34,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:20:34,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:34,772 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:34,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:34,773 INFO L85 PathProgramCache]: Analyzing trace with hash -807096895, now seen corresponding path program 2 times [2024-11-08 19:20:34,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:34,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014694705] [2024-11-08 19:20:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:34,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:34,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 19:20:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:34,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 19:20:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:34,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-08 19:20:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-08 19:20:34,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014694705] [2024-11-08 19:20:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014694705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:34,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554254549] [2024-11-08 19:20:34,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:20:34,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:34,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:34,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:20:35,117 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:20:35,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:20:35,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:20:35,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 19:20:35,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:35,311 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 19:20:35,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554254549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:35,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:35,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-08 19:20:35,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144157053] [2024-11-08 19:20:35,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:35,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 19:20:35,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 19:20:35,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 19:20:35,314 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 19:20:35,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:35,397 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2024-11-08 19:20:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 19:20:35,397 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-08 19:20:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:35,398 INFO L225 Difference]: With dead ends: 83 [2024-11-08 19:20:35,398 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 19:20:35,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 19:20:35,400 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:35,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:20:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 19:20:35,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 19:20:35,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-08 19:20:35,408 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 63 [2024-11-08 19:20:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:35,408 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-08 19:20:35,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 19:20:35,409 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-08 19:20:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 19:20:35,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:35,410 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:35,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:20:35,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:35,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:35,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:35,615 INFO L85 PathProgramCache]: Analyzing trace with hash -381138530, now seen corresponding path program 3 times [2024-11-08 19:20:35,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:35,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741848232] [2024-11-08 19:20:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:35,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:20:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:35,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-08 19:20:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:35,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 19:20:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-08 19:20:35,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:35,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741848232] [2024-11-08 19:20:35,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741848232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:35,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59628214] [2024-11-08 19:20:35,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 19:20:35,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:35,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:35,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:35,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:20:35,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 19:20:35,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:20:35,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:20:35,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-08 19:20:36,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-08 19:20:36,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59628214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:36,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:36,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 19:20:36,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120018164] [2024-11-08 19:20:36,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:36,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:20:36,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:36,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:20:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:20:36,091 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 19:20:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:36,158 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2024-11-08 19:20:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:20:36,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-11-08 19:20:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:36,164 INFO L225 Difference]: With dead ends: 98 [2024-11-08 19:20:36,164 INFO L226 Difference]: Without dead ends: 69 [2024-11-08 19:20:36,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:20:36,165 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:36,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 107 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:20:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-08 19:20:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-08 19:20:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.15625) internal successors, (74), 64 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2024-11-08 19:20:36,182 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 77 [2024-11-08 19:20:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:36,182 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2024-11-08 19:20:36,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 19:20:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2024-11-08 19:20:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 19:20:36,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:36,184 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:36,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 19:20:36,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 19:20:36,385 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:36,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash 955430266, now seen corresponding path program 4 times [2024-11-08 19:20:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:36,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559532010] [2024-11-08 19:20:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:36,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:20:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:36,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 19:20:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:36,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-11-08 19:20:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2024-11-08 19:20:36,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:36,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559532010] [2024-11-08 19:20:36,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559532010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:36,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904927281] [2024-11-08 19:20:36,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 19:20:36,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:36,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:36,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:36,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 19:20:37,126 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 19:20:37,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:20:37,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 19:20:37,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2024-11-08 19:20:37,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2024-11-08 19:20:37,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904927281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:37,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:37,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-08 19:20:37,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153873743] [2024-11-08 19:20:37,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:37,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 19:20:37,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:37,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 19:20:37,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 19:20:37,347 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 19:20:37,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:37,422 INFO L93 Difference]: Finished difference Result 129 states and 160 transitions. [2024-11-08 19:20:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 19:20:37,428 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 125 [2024-11-08 19:20:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:37,429 INFO L225 Difference]: With dead ends: 129 [2024-11-08 19:20:37,429 INFO L226 Difference]: Without dead ends: 85 [2024-11-08 19:20:37,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 249 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 19:20:37,430 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 25 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:37,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 92 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:20:37,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-08 19:20:37,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-08 19:20:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.175) internal successors, (94), 80 states have internal predecessors, (94), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 100 transitions. [2024-11-08 19:20:37,448 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 100 transitions. Word has length 125 [2024-11-08 19:20:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:37,449 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 100 transitions. [2024-11-08 19:20:37,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 19:20:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 100 transitions. [2024-11-08 19:20:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-08 19:20:37,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:37,456 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:37,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 19:20:37,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:37,657 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:37,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:37,658 INFO L85 PathProgramCache]: Analyzing trace with hash 516127062, now seen corresponding path program 5 times [2024-11-08 19:20:37,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:37,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102610259] [2024-11-08 19:20:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:37,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:37,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:20:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:37,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 19:20:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:37,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-11-08 19:20:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2024-11-08 19:20:38,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:38,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102610259] [2024-11-08 19:20:38,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102610259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:38,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24128807] [2024-11-08 19:20:38,014 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 19:20:38,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:38,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:38,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:38,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 19:20:38,497 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-11-08 19:20:38,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:20:38,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:20:38,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 850 proven. 4 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2024-11-08 19:20:38,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2024-11-08 19:20:38,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24128807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:38,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:38,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-08 19:20:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35057097] [2024-11-08 19:20:38,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:38,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 19:20:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:38,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 19:20:38,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:20:38,599 INFO L87 Difference]: Start difference. First operand 85 states and 100 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:20:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:38,647 INFO L93 Difference]: Finished difference Result 143 states and 175 transitions. [2024-11-08 19:20:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:20:38,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 173 [2024-11-08 19:20:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:38,649 INFO L225 Difference]: With dead ends: 143 [2024-11-08 19:20:38,649 INFO L226 Difference]: Without dead ends: 92 [2024-11-08 19:20:38,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:20:38,654 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:38,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 76 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-08 19:20:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-08 19:20:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 87 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2024-11-08 19:20:38,672 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 173 [2024-11-08 19:20:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:38,672 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2024-11-08 19:20:38,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:20:38,673 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2024-11-08 19:20:38,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-08 19:20:38,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:38,675 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:38,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 19:20:38,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:38,875 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:38,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:38,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1281708094, now seen corresponding path program 6 times [2024-11-08 19:20:38,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:38,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426082765] [2024-11-08 19:20:38,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:38,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:39,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:20:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:39,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 19:20:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:39,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-11-08 19:20:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2024-11-08 19:20:39,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:39,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426082765] [2024-11-08 19:20:39,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426082765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:39,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128867846] [2024-11-08 19:20:39,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 19:20:39,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:39,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:39,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:39,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 19:20:39,964 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-08 19:20:39,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:20:39,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 19:20:39,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2024-11-08 19:20:40,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2024-11-08 19:20:40,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128867846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:40,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:40,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-08 19:20:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409733920] [2024-11-08 19:20:40,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:40,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 19:20:40,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 19:20:40,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 19:20:40,121 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:20:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:40,164 INFO L93 Difference]: Finished difference Result 149 states and 176 transitions. [2024-11-08 19:20:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 19:20:40,165 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 181 [2024-11-08 19:20:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:40,166 INFO L225 Difference]: With dead ends: 149 [2024-11-08 19:20:40,166 INFO L226 Difference]: Without dead ends: 98 [2024-11-08 19:20:40,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 360 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-11-08 19:20:40,167 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:40,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 76 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-08 19:20:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-08 19:20:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 93 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 19:20:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2024-11-08 19:20:40,176 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 181 [2024-11-08 19:20:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:40,177 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2024-11-08 19:20:40,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 19:20:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2024-11-08 19:20:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-08 19:20:40,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:40,180 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:40,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 19:20:40,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:40,384 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:40,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:40,385 INFO L85 PathProgramCache]: Analyzing trace with hash -743670861, now seen corresponding path program 7 times [2024-11-08 19:20:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:40,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796605961] [2024-11-08 19:20:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:40,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:44,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:20:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:45,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 19:20:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:45,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 19:20:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 0 proven. 1716 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2024-11-08 19:20:46,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:46,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796605961] [2024-11-08 19:20:46,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796605961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:46,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284126974] [2024-11-08 19:20:46,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 19:20:46,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:46,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:46,197 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:46,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:20:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:46,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-08 19:20:46,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 0 proven. 1710 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-11-08 19:20:47,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 0 proven. 1710 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-11-08 19:20:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284126974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:48,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:48,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 34 [2024-11-08 19:20:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245731350] [2024-11-08 19:20:48,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:48,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 19:20:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 19:20:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 19:20:48,659 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 34 states, 33 states have (on average 3.272727272727273) internal successors, (108), 30 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 19:20:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:49,452 INFO L93 Difference]: Finished difference Result 315 states and 384 transitions. [2024-11-08 19:20:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 19:20:49,453 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.272727272727273) internal successors, (108), 30 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 187 [2024-11-08 19:20:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:49,458 INFO L225 Difference]: With dead ends: 315 [2024-11-08 19:20:49,458 INFO L226 Difference]: Without dead ends: 311 [2024-11-08 19:20:49,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 19:20:49,461 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 24 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:49,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1630 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 19:20:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-08 19:20:49,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 275. [2024-11-08 19:20:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 267 states have (on average 1.2247191011235956) internal successors, (327), 268 states have internal predecessors, (327), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-08 19:20:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 341 transitions. [2024-11-08 19:20:49,490 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 341 transitions. Word has length 187 [2024-11-08 19:20:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:49,491 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 341 transitions. [2024-11-08 19:20:49,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.272727272727273) internal successors, (108), 30 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 19:20:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 341 transitions. [2024-11-08 19:20:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-08 19:20:49,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:49,497 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:49,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 19:20:49,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 19:20:49,702 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:49,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:49,702 INFO L85 PathProgramCache]: Analyzing trace with hash -63612491, now seen corresponding path program 1 times [2024-11-08 19:20:49,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:49,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812764416] [2024-11-08 19:20:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:54,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:20:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:54,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 19:20:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:54,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 19:20:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 850 proven. 855 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-08 19:20:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:56,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812764416] [2024-11-08 19:20:56,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812764416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:56,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443552209] [2024-11-08 19:20:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:56,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:56,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:56,041 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:56,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 19:20:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:56,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-08 19:20:56,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:56,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:20:56,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:20:56,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:20:56,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:20:56,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:20:56,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 19:20:56,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 19:20:56,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 19:20:56,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 19:20:56,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-08 19:20:57,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-08 19:20:57,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:20:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 864 proven. 784 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-11-08 19:20:59,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:21:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 895 proven. 595 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2024-11-08 19:21:01,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443552209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:21:01,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:21:01,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 36, 20] total 79 [2024-11-08 19:21:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378001227] [2024-11-08 19:21:01,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:21:01,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-08 19:21:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:21:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-08 19:21:01,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=5861, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 19:21:01,664 INFO L87 Difference]: Start difference. First operand 275 states and 341 transitions. Second operand has 79 states, 77 states have (on average 3.116883116883117) internal successors, (240), 76 states have internal predecessors, (240), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:21:09,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:09,303 INFO L93 Difference]: Finished difference Result 756 states and 973 transitions. [2024-11-08 19:21:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-08 19:21:09,304 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 77 states have (on average 3.116883116883117) internal successors, (240), 76 states have internal predecessors, (240), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 187 [2024-11-08 19:21:09,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:09,309 INFO L225 Difference]: With dead ends: 756 [2024-11-08 19:21:09,310 INFO L226 Difference]: Without dead ends: 684 [2024-11-08 19:21:09,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3523 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=814, Invalid=12758, Unknown=0, NotChecked=0, Total=13572 [2024-11-08 19:21:09,317 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 202 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 5350 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 5350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:09,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1782 Invalid, 5364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 5350 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 19:21:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-11-08 19:21:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 540. [2024-11-08 19:21:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 528 states have (on average 1.2386363636363635) internal successors, (654), 531 states have internal predecessors, (654), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-08 19:21:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 675 transitions. [2024-11-08 19:21:09,394 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 675 transitions. Word has length 187 [2024-11-08 19:21:09,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:09,395 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 675 transitions. [2024-11-08 19:21:09,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 77 states have (on average 3.116883116883117) internal successors, (240), 76 states have internal predecessors, (240), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:21:09,395 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 675 transitions. [2024-11-08 19:21:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-08 19:21:09,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:09,400 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:09,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 19:21:09,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 19:21:09,604 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:09,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1330476875, now seen corresponding path program 2 times [2024-11-08 19:21:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:21:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290966987] [2024-11-08 19:21:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:21:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:16,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:21:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:17,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 19:21:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:17,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 19:21:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 424 proven. 1377 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-08 19:21:18,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:21:18,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290966987] [2024-11-08 19:21:18,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290966987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:21:18,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443165438] [2024-11-08 19:21:18,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:21:18,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:18,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:18,855 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:18,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 19:21:19,141 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:21:19,141 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:21:19,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-08 19:21:19,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:19,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:19,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2024-11-08 19:21:19,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:19,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:19,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:19,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:20,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:20,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:20,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:20,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:20,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:20,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:20,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:20,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:20,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:20,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:20,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:20,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-08 19:21:20,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:20,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2024-11-08 19:21:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 884 proven. 948 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-08 19:21:22,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:21:25,762 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-11-08 19:21:25,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2024-11-08 19:21:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 900 proven. 831 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-11-08 19:21:26,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443165438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:21:26,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:21:26,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 48, 36] total 100 [2024-11-08 19:21:26,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342597035] [2024-11-08 19:21:26,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:21:26,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-11-08 19:21:26,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:21:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-11-08 19:21:26,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=9420, Unknown=0, NotChecked=0, Total=9900 [2024-11-08 19:21:26,866 INFO L87 Difference]: Start difference. First operand 540 states and 675 transitions. Second operand has 100 states, 100 states have (on average 2.97) internal successors, (297), 98 states have internal predecessors, (297), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-08 19:21:37,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:37,288 INFO L93 Difference]: Finished difference Result 2449 states and 3161 transitions. [2024-11-08 19:21:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-08 19:21:37,289 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.97) internal successors, (297), 98 states have internal predecessors, (297), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 187 [2024-11-08 19:21:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:37,298 INFO L225 Difference]: With dead ends: 2449 [2024-11-08 19:21:37,298 INFO L226 Difference]: Without dead ends: 1701 [2024-11-08 19:21:37,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4996 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1062, Invalid=17570, Unknown=0, NotChecked=0, Total=18632 [2024-11-08 19:21:37,306 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 147 mSDsluCounter, 3670 mSDsCounter, 0 mSdLazyCounter, 10206 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 3753 SdHoareTripleChecker+Invalid, 10228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 10206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:37,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 3753 Invalid, 10228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 10206 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-08 19:21:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2024-11-08 19:21:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1124. [2024-11-08 19:21:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1101 states have (on average 1.2379654859218892) internal successors, (1363), 1107 states have internal predecessors, (1363), 11 states have call successors, (11), 5 states have call predecessors, (11), 11 states have return successors, (37), 11 states have call predecessors, (37), 11 states have call successors, (37) [2024-11-08 19:21:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1411 transitions. [2024-11-08 19:21:37,438 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1411 transitions. Word has length 187 [2024-11-08 19:21:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:37,438 INFO L471 AbstractCegarLoop]: Abstraction has 1124 states and 1411 transitions. [2024-11-08 19:21:37,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.97) internal successors, (297), 98 states have internal predecessors, (297), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-08 19:21:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1411 transitions. [2024-11-08 19:21:37,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-08 19:21:37,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:37,445 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:21:37,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 19:21:37,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 19:21:37,650 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:37,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1962948533, now seen corresponding path program 3 times [2024-11-08 19:21:37,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:21:37,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634499080] [2024-11-08 19:21:37,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:37,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:21:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:43,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:21:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:43,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 19:21:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:44,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 19:21:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 848 proven. 955 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-08 19:21:45,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:21:45,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634499080] [2024-11-08 19:21:45,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634499080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:21:45,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103170282] [2024-11-08 19:21:45,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 19:21:45,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:45,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:45,276 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:45,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 19:21:46,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-08 19:21:46,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:21:46,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-08 19:21:46,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:46,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:46,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2024-11-08 19:21:46,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:46,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:46,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:46,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:46,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:46,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:46,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:46,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:46,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:46,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:47,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:47,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:21:47,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:47,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-08 19:21:47,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:47,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-08 19:21:47,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:21:47,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2024-11-08 19:21:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 850 proven. 881 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-11-08 19:21:48,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:21:50,368 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-11-08 19:21:50,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2024-11-08 19:21:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 849 proven. 784 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-11-08 19:21:51,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103170282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:21:51,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:21:51,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 44, 33] total 95 [2024-11-08 19:21:51,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801558118] [2024-11-08 19:21:51,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:21:51,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-08 19:21:51,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:21:51,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-08 19:21:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=8326, Unknown=0, NotChecked=0, Total=8930 [2024-11-08 19:21:51,215 INFO L87 Difference]: Start difference. First operand 1124 states and 1411 transitions. Second operand has 95 states, 95 states have (on average 2.6315789473684212) internal successors, (250), 92 states have internal predecessors, (250), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:22:46,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:23:26,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:23:31,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:23:33,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:23:34,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:23:38,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:23:39,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:23:41,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:23:48,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:24:06,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 19:25:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:54,953 INFO L93 Difference]: Finished difference Result 13196 states and 17902 transitions. [2024-11-08 19:25:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 429 states. [2024-11-08 19:25:54,954 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.6315789473684212) internal successors, (250), 92 states have internal predecessors, (250), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 187 [2024-11-08 19:25:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:55,009 INFO L225 Difference]: With dead ends: 13196 [2024-11-08 19:25:55,009 INFO L226 Difference]: Without dead ends: 9965 [2024-11-08 19:25:55,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 347 SyntacticMatches, 5 SemanticMatches, 483 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90134 ImplicationChecksByTransitivity, 194.2s TimeCoverageRelationStatistics Valid=21263, Invalid=213352, Unknown=125, NotChecked=0, Total=234740 [2024-11-08 19:25:55,054 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 433 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 22492 mSolverCounterSat, 145 mSolverCounterUnsat, 35 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 22672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 22492 IncrementalHoareTripleChecker+Invalid, 35 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:55,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 2149 Invalid, 22672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [145 Valid, 22492 Invalid, 35 Unknown, 0 Unchecked, 51.5s Time] [2024-11-08 19:25:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9965 states. [2024-11-08 19:25:55,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9965 to 2995. [2024-11-08 19:25:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2944 states have (on average 1.2360733695652173) internal successors, (3639), 2960 states have internal predecessors, (3639), 24 states have call successors, (24), 13 states have call predecessors, (24), 26 states have return successors, (101), 21 states have call predecessors, (101), 24 states have call successors, (101) [2024-11-08 19:25:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3764 transitions. [2024-11-08 19:25:55,796 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3764 transitions. Word has length 187 [2024-11-08 19:25:55,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:55,797 INFO L471 AbstractCegarLoop]: Abstraction has 2995 states and 3764 transitions. [2024-11-08 19:25:55,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.6315789473684212) internal successors, (250), 92 states have internal predecessors, (250), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-08 19:25:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3764 transitions. [2024-11-08 19:25:55,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-08 19:25:55,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:55,810 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:55,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 19:25:56,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 19:25:56,011 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:25:56,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:56,011 INFO L85 PathProgramCache]: Analyzing trace with hash -320969035, now seen corresponding path program 4 times [2024-11-08 19:25:56,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:25:56,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986738434] [2024-11-08 19:25:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:56,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:25:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:03,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:26:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:03,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 19:26:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:04,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 19:26:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 848 proven. 951 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-11-08 19:26:05,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:26:05,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986738434] [2024-11-08 19:26:05,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986738434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:26:05,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062938537] [2024-11-08 19:26:05,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 19:26:05,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:26:05,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:26:05,220 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:26:05,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 19:26:05,539 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 19:26:05,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:26:05,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-08 19:26:05,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:26:05,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:26:05,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:26:05,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 19:26:06,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:06,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2024-11-08 19:26:06,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:06,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2024-11-08 19:26:07,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:07,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:26:07,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:07,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:26:07,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:07,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:26:07,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:07,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:26:07,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:07,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:26:07,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:07,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2024-11-08 19:26:07,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:26:07,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:26:07,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:26:07,840 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-08 19:26:07,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 47 [2024-11-08 19:26:08,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:08,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2024-11-08 19:26:08,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:08,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2024-11-08 19:26:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 28 proven. 1969 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-08 19:26:10,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:26:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062938537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:26:53,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:26:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 56] total 77 [2024-11-08 19:26:53,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789017627] [2024-11-08 19:26:53,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:26:53,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-08 19:26:53,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:26:53,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-08 19:26:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=8952, Unknown=0, NotChecked=0, Total=9506 [2024-11-08 19:26:53,546 INFO L87 Difference]: Start difference. First operand 2995 states and 3764 transitions. Second operand has 77 states, 77 states have (on average 2.948051948051948) internal successors, (227), 76 states have internal predecessors, (227), 3 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 19:27:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:27:09,055 INFO L93 Difference]: Finished difference Result 14538 states and 18785 transitions. [2024-11-08 19:27:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-08 19:27:09,057 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.948051948051948) internal successors, (227), 76 states have internal predecessors, (227), 3 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 187 [2024-11-08 19:27:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:27:09,113 INFO L225 Difference]: With dead ends: 14538 [2024-11-08 19:27:09,114 INFO L226 Difference]: Without dead ends: 10115 [2024-11-08 19:27:09,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5419 ImplicationChecksByTransitivity, 51.9s TimeCoverageRelationStatistics Valid=1090, Invalid=17270, Unknown=0, NotChecked=0, Total=18360 [2024-11-08 19:27:09,137 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 111 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 8366 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 8381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 8366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:27:09,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 2945 Invalid, 8381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 8366 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2024-11-08 19:27:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10115 states. [2024-11-08 19:27:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10115 to 6386. [2024-11-08 19:27:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6386 states, 6273 states have (on average 1.2338593974175036) internal successors, (7740), 6317 states have internal predecessors, (7740), 47 states have call successors, (47), 27 states have call predecessors, (47), 65 states have return successors, (257), 41 states have call predecessors, (257), 47 states have call successors, (257) [2024-11-08 19:27:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6386 states to 6386 states and 8044 transitions. [2024-11-08 19:27:10,458 INFO L78 Accepts]: Start accepts. Automaton has 6386 states and 8044 transitions. Word has length 187 [2024-11-08 19:27:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:27:10,459 INFO L471 AbstractCegarLoop]: Abstraction has 6386 states and 8044 transitions. [2024-11-08 19:27:10,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.948051948051948) internal successors, (227), 76 states have internal predecessors, (227), 3 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 19:27:10,459 INFO L276 IsEmpty]: Start isEmpty. Operand 6386 states and 8044 transitions. [2024-11-08 19:27:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-08 19:27:10,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:27:10,489 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:27:10,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 19:27:10,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 19:27:10,693 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:27:10,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:27:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash -603122251, now seen corresponding path program 5 times [2024-11-08 19:27:10,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:27:10,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996345368] [2024-11-08 19:27:10,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:27:10,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:27:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:27:15,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 19:27:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:27:16,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 19:27:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:27:16,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 19:27:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:27:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 426 proven. 1352 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-08 19:27:17,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:27:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996345368] [2024-11-08 19:27:17,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996345368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:27:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999340274] [2024-11-08 19:27:17,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 19:27:17,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:27:17,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:27:17,784 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:27:17,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98dc6228-2346-4927-8802-c55815e832af/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 19:27:21,631 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-08 19:27:21,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:27:21,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-08 19:27:21,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:27:22,307 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-08 19:27:22,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2024-11-08 19:27:22,728 INFO L349 Elim1Store]: treesize reduction 100, result has 44.1 percent of original size [2024-11-08 19:27:22,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 73 treesize of output 124 [2024-11-08 19:27:24,424 INFO L349 Elim1Store]: treesize reduction 552, result has 27.9 percent of original size [2024-11-08 19:27:24,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 75 case distinctions, treesize of input 187 treesize of output 328