./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem15_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem15_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI --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 aecc251e3a04389021643c9d3a2f93560d6eaa837503e24ad3087f64c8e3ada0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:48,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:48,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:53:48,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:48,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:48,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:48,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:48,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:48,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:48,949 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:48,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:48,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:48,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:48,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:48,953 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:48,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:48,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:53:48,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:48,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:48,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:48,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:48,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:53:48,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:48,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:53:48,959 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:48,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:53:48,960 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:48,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:48,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:48,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:48,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:48,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:48,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:48,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:48,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:53:48,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:53:48,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:53:48,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:48,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:48,966 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:53:48,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:48,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:48,967 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_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aecc251e3a04389021643c9d3a2f93560d6eaa837503e24ad3087f64c8e3ada0 [2023-11-24 21:53:49,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:49,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:49,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:49,339 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:49,339 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:49,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/eca-rers2012/Problem15_label34.c [2023-11-24 21:53:52,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:52,854 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:52,857 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/sv-benchmarks/c/eca-rers2012/Problem15_label34.c [2023-11-24 21:53:52,888 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/data/7b10c13ff/b419ba12eef3460a82aff8636348682b/FLAG1cf4cf15a [2023-11-24 21:53:52,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/data/7b10c13ff/b419ba12eef3460a82aff8636348682b [2023-11-24 21:53:52,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:52,913 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:52,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:52,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:52,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:52,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:52" (1/1) ... [2023-11-24 21:53:52,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7edf184a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:52, skipping insertion in model container [2023-11-24 21:53:52,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:52" (1/1) ... [2023-11-24 21:53:53,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:53,258 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/sv-benchmarks/c/eca-rers2012/Problem15_label34.c[1804,1817] [2023-11-24 21:53:53,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:53,914 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:53:53,945 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/sv-benchmarks/c/eca-rers2012/Problem15_label34.c[1804,1817] [2023-11-24 21:53:54,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:54,227 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:53:54,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54 WrapperNode [2023-11-24 21:53:54,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:54,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:54,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:53:54,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:53:54,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,552 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1759 [2023-11-24 21:53:54,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:54,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:53:54,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:53:54,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:53:54,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,683 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 21:53:54,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:54,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:55,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:53:55,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:53:55,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:53:55,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:53:55,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (1/1) ... [2023-11-24 21:53:55,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:55,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:55,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:53:55,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:53:55,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:53:55,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:53:55,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:53:55,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:53:55,190 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:53:55,195 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:53:58,661 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:53:58,728 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:53:58,729 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:53:58,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:58 BoogieIcfgContainer [2023-11-24 21:53:58,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:53:58,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:53:58,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:53:58,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:53:58,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:53:52" (1/3) ... [2023-11-24 21:53:58,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc1b290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:58, skipping insertion in model container [2023-11-24 21:53:58,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:54" (2/3) ... [2023-11-24 21:53:58,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc1b290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:58, skipping insertion in model container [2023-11-24 21:53:58,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:58" (3/3) ... [2023-11-24 21:53:58,772 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label34.c [2023-11-24 21:53:58,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:53:58,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:53:58,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:53:58,898 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2df937a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:53:58,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:53:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 21:53:58,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:58,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:58,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:53:58,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:58,928 INFO L85 PathProgramCache]: Analyzing trace with hash -454458308, now seen corresponding path program 1 times [2023-11-24 21:53:58,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:58,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834134511] [2023-11-24 21:53:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:59,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:59,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834134511] [2023-11-24 21:53:59,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834134511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:59,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:59,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:59,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527565091] [2023-11-24 21:53:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:59,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:53:59,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:53:59,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:53:59,152 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:59,254 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2023-11-24 21:53:59,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:53:59,257 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 21:53:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:59,282 INFO L225 Difference]: With dead ends: 723 [2023-11-24 21:53:59,282 INFO L226 Difference]: Without dead ends: 360 [2023-11-24 21:53:59,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:53:59,291 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:59,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-24 21:53:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-11-24 21:53:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2023-11-24 21:53:59,381 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 12 [2023-11-24 21:53:59,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:59,382 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2023-11-24 21:53:59,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2023-11-24 21:53:59,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 21:53:59,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:59,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:59,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:53:59,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:53:59,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:59,384 INFO L85 PathProgramCache]: Analyzing trace with hash -321400509, now seen corresponding path program 1 times [2023-11-24 21:53:59,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:59,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505793791] [2023-11-24 21:53:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:59,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:59,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:59,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505793791] [2023-11-24 21:53:59,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505793791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:59,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:59,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:59,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457282414] [2023-11-24 21:53:59,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:59,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:59,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:59,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:59,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:59,514 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:02,187 INFO L93 Difference]: Finished difference Result 1025 states and 1788 transitions. [2023-11-24 21:54:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:02,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 21:54:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:02,192 INFO L225 Difference]: With dead ends: 1025 [2023-11-24 21:54:02,193 INFO L226 Difference]: Without dead ends: 666 [2023-11-24 21:54:02,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:02,196 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 315 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:02,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 316 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-24 21:54:02,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-11-24 21:54:02,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2023-11-24 21:54:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 1.4796380090497738) internal successors, (981), 663 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 981 transitions. [2023-11-24 21:54:02,243 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 981 transitions. Word has length 12 [2023-11-24 21:54:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:02,243 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 981 transitions. [2023-11-24 21:54:02,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,243 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 981 transitions. [2023-11-24 21:54:02,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-24 21:54:02,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:02,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:02,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:54:02,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:02,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:02,249 INFO L85 PathProgramCache]: Analyzing trace with hash -169024139, now seen corresponding path program 1 times [2023-11-24 21:54:02,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:02,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996140245] [2023-11-24 21:54:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:02,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:02,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:02,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996140245] [2023-11-24 21:54:02,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996140245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:02,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:02,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083951001] [2023-11-24 21:54:02,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:02,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:02,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:02,618 INFO L87 Difference]: Start difference. First operand 664 states and 981 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:06,083 INFO L93 Difference]: Finished difference Result 1952 states and 2892 transitions. [2023-11-24 21:54:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:06,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-24 21:54:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:06,093 INFO L225 Difference]: With dead ends: 1952 [2023-11-24 21:54:06,094 INFO L226 Difference]: Without dead ends: 1289 [2023-11-24 21:54:06,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:06,097 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 256 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:06,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 324 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-24 21:54:06,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-11-24 21:54:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1281. [2023-11-24 21:54:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.3984375) internal successors, (1790), 1280 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1790 transitions. [2023-11-24 21:54:06,144 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1790 transitions. Word has length 87 [2023-11-24 21:54:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:06,144 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1790 transitions. [2023-11-24 21:54:06,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1790 transitions. [2023-11-24 21:54:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:54:06,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:06,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:06,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:54:06,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:06,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:06,151 INFO L85 PathProgramCache]: Analyzing trace with hash 848957183, now seen corresponding path program 1 times [2023-11-24 21:54:06,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:06,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948105394] [2023-11-24 21:54:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:06,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:06,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:06,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948105394] [2023-11-24 21:54:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948105394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:06,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:06,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:06,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753676955] [2023-11-24 21:54:06,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:06,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:06,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:06,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:06,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:06,382 INFO L87 Difference]: Start difference. First operand 1281 states and 1790 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:09,737 INFO L93 Difference]: Finished difference Result 3763 states and 5259 transitions. [2023-11-24 21:54:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-24 21:54:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:09,754 INFO L225 Difference]: With dead ends: 3763 [2023-11-24 21:54:09,754 INFO L226 Difference]: Without dead ends: 2483 [2023-11-24 21:54:09,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:09,759 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 236 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:09,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 364 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-24 21:54:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2023-11-24 21:54:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2181. [2023-11-24 21:54:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.2811926605504587) internal successors, (2793), 2180 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2793 transitions. [2023-11-24 21:54:09,826 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2793 transitions. Word has length 91 [2023-11-24 21:54:09,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:09,827 INFO L495 AbstractCegarLoop]: Abstraction has 2181 states and 2793 transitions. [2023-11-24 21:54:09,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2793 transitions. [2023-11-24 21:54:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-24 21:54:09,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:09,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:09,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:54:09,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:09,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1971295838, now seen corresponding path program 1 times [2023-11-24 21:54:09,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:09,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387583485] [2023-11-24 21:54:09,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:09,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 21:54:10,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:10,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387583485] [2023-11-24 21:54:10,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387583485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:10,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:10,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:10,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079711022] [2023-11-24 21:54:10,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:10,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:10,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:10,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:10,277 INFO L87 Difference]: Start difference. First operand 2181 states and 2793 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:12,648 INFO L93 Difference]: Finished difference Result 6165 states and 7957 transitions. [2023-11-24 21:54:12,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:12,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-11-24 21:54:12,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:12,674 INFO L225 Difference]: With dead ends: 6165 [2023-11-24 21:54:12,675 INFO L226 Difference]: Without dead ends: 3985 [2023-11-24 21:54:12,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:12,680 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:12,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 337 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-24 21:54:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2023-11-24 21:54:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3681. [2023-11-24 21:54:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3680 states have (on average 1.2195652173913043) internal successors, (4488), 3680 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4488 transitions. [2023-11-24 21:54:12,803 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4488 transitions. Word has length 182 [2023-11-24 21:54:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:12,804 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 4488 transitions. [2023-11-24 21:54:12,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4488 transitions. [2023-11-24 21:54:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-11-24 21:54:12,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:12,812 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:12,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:54:12,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:12,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash -221685194, now seen corresponding path program 1 times [2023-11-24 21:54:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:12,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140747602] [2023-11-24 21:54:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:12,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 21:54:13,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:13,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140747602] [2023-11-24 21:54:13,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140747602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:13,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:13,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:13,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908061198] [2023-11-24 21:54:13,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:13,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:13,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:13,994 INFO L87 Difference]: Start difference. First operand 3681 states and 4488 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:16,650 INFO L93 Difference]: Finished difference Result 7660 states and 9286 transitions. [2023-11-24 21:54:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:16,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2023-11-24 21:54:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:16,683 INFO L225 Difference]: With dead ends: 7660 [2023-11-24 21:54:16,686 INFO L226 Difference]: Without dead ends: 3980 [2023-11-24 21:54:16,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:16,696 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:16,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 357 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-24 21:54:16,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-11-24 21:54:16,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3980. [2023-11-24 21:54:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3979 states have (on average 1.204574013571249) internal successors, (4793), 3979 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 4793 transitions. [2023-11-24 21:54:16,881 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 4793 transitions. Word has length 284 [2023-11-24 21:54:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:16,889 INFO L495 AbstractCegarLoop]: Abstraction has 3980 states and 4793 transitions. [2023-11-24 21:54:16,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 4793 transitions. [2023-11-24 21:54:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-11-24 21:54:16,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:16,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:16,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:54:16,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:16,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:16,898 INFO L85 PathProgramCache]: Analyzing trace with hash 138696947, now seen corresponding path program 1 times [2023-11-24 21:54:16,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:16,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262573325] [2023-11-24 21:54:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:16,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-24 21:54:17,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:17,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262573325] [2023-11-24 21:54:17,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262573325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:17,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:17,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866567062] [2023-11-24 21:54:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:17,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:17,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:17,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:17,422 INFO L87 Difference]: Start difference. First operand 3980 states and 4793 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:20,233 INFO L93 Difference]: Finished difference Result 9464 states and 11667 transitions. [2023-11-24 21:54:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:20,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2023-11-24 21:54:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:20,269 INFO L225 Difference]: With dead ends: 9464 [2023-11-24 21:54:20,269 INFO L226 Difference]: Without dead ends: 5784 [2023-11-24 21:54:20,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:20,276 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 303 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:20,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 668 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-24 21:54:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2023-11-24 21:54:20,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5782. [2023-11-24 21:54:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5781 states have (on average 1.1672720982528975) internal successors, (6748), 5781 states have internal predecessors, (6748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 6748 transitions. [2023-11-24 21:54:20,428 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 6748 transitions. Word has length 299 [2023-11-24 21:54:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:20,430 INFO L495 AbstractCegarLoop]: Abstraction has 5782 states and 6748 transitions. [2023-11-24 21:54:20,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 6748 transitions. [2023-11-24 21:54:20,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-11-24 21:54:20,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:20,440 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:20,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:54:20,441 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:20,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash 373308132, now seen corresponding path program 1 times [2023-11-24 21:54:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:20,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375883424] [2023-11-24 21:54:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375883424] [2023-11-24 21:54:22,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375883424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:54:22,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496934612] [2023-11-24 21:54:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:22,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:22,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:22,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:22,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:54:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:22,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:54:22,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:22,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:22,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496934612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:22,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:54:22,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-24 21:54:22,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253471906] [2023-11-24 21:54:22,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:22,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:22,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:22,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:22,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:54:22,955 INFO L87 Difference]: Start difference. First operand 5782 states and 6748 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:25,390 INFO L93 Difference]: Finished difference Result 13365 states and 15910 transitions. [2023-11-24 21:54:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:25,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2023-11-24 21:54:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:25,434 INFO L225 Difference]: With dead ends: 13365 [2023-11-24 21:54:25,434 INFO L226 Difference]: Without dead ends: 7883 [2023-11-24 21:54:25,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:54:25,442 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 273 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:25,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 261 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-24 21:54:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2023-11-24 21:54:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 7280. [2023-11-24 21:54:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7280 states, 7279 states have (on average 1.1614232724275313) internal successors, (8454), 7279 states have internal predecessors, (8454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:25,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7280 states to 7280 states and 8454 transitions. [2023-11-24 21:54:25,737 INFO L78 Accepts]: Start accepts. Automaton has 7280 states and 8454 transitions. Word has length 358 [2023-11-24 21:54:25,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:25,739 INFO L495 AbstractCegarLoop]: Abstraction has 7280 states and 8454 transitions. [2023-11-24 21:54:25,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 7280 states and 8454 transitions. [2023-11-24 21:54:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-11-24 21:54:25,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:25,755 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:25,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:25,965 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:25,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1674429931, now seen corresponding path program 1 times [2023-11-24 21:54:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:25,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457190540] [2023-11-24 21:54:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2023-11-24 21:54:26,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457190540] [2023-11-24 21:54:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457190540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:26,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038815610] [2023-11-24 21:54:26,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:26,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:26,654 INFO L87 Difference]: Start difference. First operand 7280 states and 8454 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:29,630 INFO L93 Difference]: Finished difference Result 16058 states and 18978 transitions. [2023-11-24 21:54:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:29,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 463 [2023-11-24 21:54:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:29,672 INFO L225 Difference]: With dead ends: 16058 [2023-11-24 21:54:29,673 INFO L226 Difference]: Without dead ends: 9078 [2023-11-24 21:54:29,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:29,683 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 318 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:29,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 608 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-24 21:54:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9078 states. [2023-11-24 21:54:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9078 to 9077. [2023-11-24 21:54:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9077 states, 9076 states have (on average 1.145107977082415) internal successors, (10393), 9076 states have internal predecessors, (10393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9077 states to 9077 states and 10393 transitions. [2023-11-24 21:54:29,877 INFO L78 Accepts]: Start accepts. Automaton has 9077 states and 10393 transitions. Word has length 463 [2023-11-24 21:54:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:29,878 INFO L495 AbstractCegarLoop]: Abstraction has 9077 states and 10393 transitions. [2023-11-24 21:54:29,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9077 states and 10393 transitions. [2023-11-24 21:54:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-11-24 21:54:29,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:29,890 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:29,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:54:29,891 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:29,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1990065964, now seen corresponding path program 1 times [2023-11-24 21:54:29,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:29,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207135510] [2023-11-24 21:54:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:29,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-24 21:54:30,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207135510] [2023-11-24 21:54:30,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207135510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:30,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:30,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:30,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159130683] [2023-11-24 21:54:30,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:30,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:30,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:30,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:30,399 INFO L87 Difference]: Start difference. First operand 9077 states and 10393 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:33,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:33,259 INFO L93 Difference]: Finished difference Result 20545 states and 23797 transitions. [2023-11-24 21:54:33,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:33,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488 [2023-11-24 21:54:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:33,287 INFO L225 Difference]: With dead ends: 20545 [2023-11-24 21:54:33,287 INFO L226 Difference]: Without dead ends: 11768 [2023-11-24 21:54:33,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:33,299 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 122 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:33,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 313 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-24 21:54:33,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11768 states. [2023-11-24 21:54:33,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11768 to 7576. [2023-11-24 21:54:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7576 states, 7575 states have (on average 1.1601320132013202) internal successors, (8788), 7575 states have internal predecessors, (8788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7576 states to 7576 states and 8788 transitions. [2023-11-24 21:54:33,480 INFO L78 Accepts]: Start accepts. Automaton has 7576 states and 8788 transitions. Word has length 488 [2023-11-24 21:54:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:33,481 INFO L495 AbstractCegarLoop]: Abstraction has 7576 states and 8788 transitions. [2023-11-24 21:54:33,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 7576 states and 8788 transitions. [2023-11-24 21:54:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2023-11-24 21:54:33,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:33,500 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:33,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:54:33,501 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:33,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash 433659823, now seen corresponding path program 1 times [2023-11-24 21:54:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:33,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945811026] [2023-11-24 21:54:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:33,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 477 proven. 39 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-24 21:54:34,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:34,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945811026] [2023-11-24 21:54:34,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945811026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:54:34,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890215530] [2023-11-24 21:54:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:34,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:34,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:34,601 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:34,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff699c6-5e3c-41fa-814c-93af738d3ed1/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:54:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:34,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:54:34,913 INFO L285 TraceCheckSpWp]: Computing forward predicates...