./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --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 64bit --witnessprinter.graph.data.programhash 0d50c3eedacd9dc96b2eba007418dd957dc79ff77f358298e2931692970e9414 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:53:10,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:53:10,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:53:11,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:53:11,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:53:11,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:53:11,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:53:11,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:53:11,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:53:11,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:53:11,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:53:11,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:53:11,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:53:11,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:53:11,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:53:11,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:53:11,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:53:11,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:53:11,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:53:11,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:53:11,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:53:11,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:53:11,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:53:11,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:53:11,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:53:11,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:53:11,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:53:11,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:53:11,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:53:11,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:53:11,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:53:11,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:53:11,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:53:11,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:53:11,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:53:11,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:53:11,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:53:11,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:53:11,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:53:11,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:53:11,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:53:11,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:53:11,134 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:53:11,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:53:11,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:53:11,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:53:11,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:53:11,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:53:11,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:53:11,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:53:11,137 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:53:11,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:53:11,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:53:11,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:53:11,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:53:11,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:53:11,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:53:11,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:53:11,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:53:11,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:53:11,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:53:11,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:53:11,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:53:11,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:53:11,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:53:11,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:53:11,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:53:11,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:53:11,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:53:11,141 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:53:11,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:53:11,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:53:11,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d50c3eedacd9dc96b2eba007418dd957dc79ff77f358298e2931692970e9414 [2022-11-02 20:53:11,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:53:11,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:53:11,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:53:11,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:53:11,507 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:53:11,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.3.prop1-func-interl.c [2022-11-02 20:53:11,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/data/73296a04a/4f8f4e522839439f84e752dbe8a02636/FLAG1056035b3 [2022-11-02 20:53:12,241 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:53:12,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.3.prop1-func-interl.c [2022-11-02 20:53:12,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/data/73296a04a/4f8f4e522839439f84e752dbe8a02636/FLAG1056035b3 [2022-11-02 20:53:12,437 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/data/73296a04a/4f8f4e522839439f84e752dbe8a02636 [2022-11-02 20:53:12,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:53:12,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:53:12,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:53:12,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:53:12,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:53:12,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:53:12" (1/1) ... [2022-11-02 20:53:12,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131fc14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:12, skipping insertion in model container [2022-11-02 20:53:12,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:53:12" (1/1) ... [2022-11-02 20:53:12,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:53:12,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:53:12,873 WARN L230 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_1770c2d8-36c3-439a-9943-279c7e9c3223/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.3.prop1-func-interl.c[1014,1027] [2022-11-02 20:53:13,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:13,439 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:53:13,451 WARN L230 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_1770c2d8-36c3-439a-9943-279c7e9c3223/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.blocks.3.prop1-func-interl.c[1014,1027] [2022-11-02 20:53:13,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:53:13,687 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:53:13,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13 WrapperNode [2022-11-02 20:53:13,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:53:13,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:13,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:53:13,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:53:13,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:13,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,171 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4036 [2022-11-02 20:53:14,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:53:14,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:53:14,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:53:14,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:53:14,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,555 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:53:14,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:53:14,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:53:14,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:53:14,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (1/1) ... [2022-11-02 20:53:14,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:53:14,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:53:14,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:53:14,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1770c2d8-36c3-439a-9943-279c7e9c3223/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:53:14,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:53:14,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:53:15,520 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:53:15,522 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:06,424 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:06,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:06,440 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:55:06,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:06 BoogieIcfgContainer [2022-11-02 20:55:06,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:06,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:06,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:06,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:06,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:53:12" (1/3) ... [2022-11-02 20:55:06,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e09f725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:06, skipping insertion in model container [2022-11-02 20:55:06,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:53:13" (2/3) ... [2022-11-02 20:55:06,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e09f725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:06, skipping insertion in model container [2022-11-02 20:55:06,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:06" (3/3) ... [2022-11-02 20:55:06,475 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.blocks.3.prop1-func-interl.c [2022-11-02 20:55:06,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:06,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:55:06,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:55:06,624 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=LoopsAndPotentialCycles, 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;@6bdf269b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:55:06,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:55:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 539 states have (on average 1.4990723562152133) internal successors, (808), 540 states have internal predecessors, (808), 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) [2022-11-02 20:55:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:55:06,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:06,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:55:06,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:55:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:06,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354440624] [2022-11-02 20:55:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:08,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:08,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354440624] [2022-11-02 20:55:08,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354440624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:08,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:08,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:08,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048538806] [2022-11-02 20:55:08,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:08,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:08,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:08,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:55:08,461 INFO L87 Difference]: Start difference. First operand has 541 states, 539 states have (on average 1.4990723562152133) internal successors, (808), 540 states have internal predecessors, (808), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 20:55:10,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:55:10,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:10,879 INFO L93 Difference]: Finished difference Result 1609 states and 2412 transitions. [2022-11-02 20:55:10,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:55:10,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-02 20:55:10,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:10,899 INFO L225 Difference]: With dead ends: 1609 [2022-11-02 20:55:10,900 INFO L226 Difference]: Without dead ends: 1070 [2022-11-02 20:55:10,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:55:10,908 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 2388 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:10,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 1601 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:55:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-11-02 20:55:10,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 539. [2022-11-02 20:55:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.4944237918215613) internal successors, (804), 538 states have internal predecessors, (804), 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) [2022-11-02 20:55:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 804 transitions. [2022-11-02 20:55:11,006 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 804 transitions. Word has length 5 [2022-11-02 20:55:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:11,006 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 804 transitions. [2022-11-02 20:55:11,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 20:55:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 804 transitions. [2022-11-02 20:55:11,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-11-02 20:55:11,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:11,033 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:11,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:55:11,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:11,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:11,037 INFO L85 PathProgramCache]: Analyzing trace with hash -383708061, now seen corresponding path program 1 times [2022-11-02 20:55:11,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:11,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485787184] [2022-11-02 20:55:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:11,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:43,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:43,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485787184] [2022-11-02 20:55:43,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485787184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:43,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:43,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:55:43,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943606012] [2022-11-02 20:55:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:43,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:55:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:55:43,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:55:43,511 INFO L87 Difference]: Start difference. First operand 539 states and 804 transitions. Second operand has 9 states, 9 states have (on average 59.77777777777778) internal successors, (538), 9 states have internal predecessors, (538), 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) [2022-11-02 20:55:46,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:55:47,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:47,626 INFO L93 Difference]: Finished difference Result 2024 states and 3028 transitions. [2022-11-02 20:55:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:55:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 59.77777777777778) internal successors, (538), 9 states have internal predecessors, (538), 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 538 [2022-11-02 20:55:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:47,635 INFO L225 Difference]: With dead ends: 2024 [2022-11-02 20:55:47,635 INFO L226 Difference]: Without dead ends: 1489 [2022-11-02 20:55:47,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:55:47,642 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 3679 mSDsluCounter, 4717 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3679 SdHoareTripleChecker+Valid, 5497 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:47,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3679 Valid, 5497 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 20:55:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-11-02 20:55:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 909. [2022-11-02 20:55:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 1.4955947136563876) internal successors, (1358), 908 states have internal predecessors, (1358), 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) [2022-11-02 20:55:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1358 transitions. [2022-11-02 20:55:47,687 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1358 transitions. Word has length 538 [2022-11-02 20:55:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:47,688 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1358 transitions. [2022-11-02 20:55:47,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 59.77777777777778) internal successors, (538), 9 states have internal predecessors, (538), 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) [2022-11-02 20:55:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1358 transitions. [2022-11-02 20:55:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-11-02 20:55:47,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:47,701 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:47,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:55:47,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:47,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:47,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1539542369, now seen corresponding path program 1 times [2022-11-02 20:55:47,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:47,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532911890] [2022-11-02 20:55:47,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:47,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:18,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:18,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532911890] [2022-11-02 20:56:18,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532911890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:18,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:18,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:56:18,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673705769] [2022-11-02 20:56:18,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:18,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:18,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:18,992 INFO L87 Difference]: Start difference. First operand 909 states and 1358 transitions. Second operand has 10 states, 10 states have (on average 53.8) internal successors, (538), 10 states have internal predecessors, (538), 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) [2022-11-02 20:56:22,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:24,296 INFO L93 Difference]: Finished difference Result 2809 states and 4203 transitions. [2022-11-02 20:56:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:56:24,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 53.8) internal successors, (538), 10 states have internal predecessors, (538), 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 538 [2022-11-02 20:56:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:24,312 INFO L225 Difference]: With dead ends: 2809 [2022-11-02 20:56:24,312 INFO L226 Difference]: Without dead ends: 2274 [2022-11-02 20:56:24,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:56:24,318 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 6008 mSDsluCounter, 5126 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6008 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:24,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6008 Valid, 5905 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 20:56:24,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-11-02 20:56:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1421. [2022-11-02 20:56:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.495774647887324) internal successors, (2124), 1420 states have internal predecessors, (2124), 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) [2022-11-02 20:56:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 2124 transitions. [2022-11-02 20:56:24,371 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 2124 transitions. Word has length 538 [2022-11-02 20:56:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:24,373 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 2124 transitions. [2022-11-02 20:56:24,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.8) internal successors, (538), 10 states have internal predecessors, (538), 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) [2022-11-02 20:56:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 2124 transitions. [2022-11-02 20:56:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-11-02 20:56:24,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:24,390 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:24,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:24,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:24,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2032168543, now seen corresponding path program 1 times [2022-11-02 20:56:24,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:24,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657366359] [2022-11-02 20:56:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:24,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:56:43,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:43,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657366359] [2022-11-02 20:56:43,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657366359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:43,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:43,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:56:43,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564395556] [2022-11-02 20:56:43,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:56:43,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:56:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:43,291 INFO L87 Difference]: Start difference. First operand 1421 states and 2124 transitions. Second operand has 10 states, 10 states have (on average 53.8) internal successors, (538), 10 states have internal predecessors, (538), 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) [2022-11-02 20:56:46,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:48,249 INFO L93 Difference]: Finished difference Result 4064 states and 6080 transitions. [2022-11-02 20:56:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:56:48,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 53.8) internal successors, (538), 10 states have internal predecessors, (538), 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 538 [2022-11-02 20:56:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:48,263 INFO L225 Difference]: With dead ends: 4064 [2022-11-02 20:56:48,263 INFO L226 Difference]: Without dead ends: 3225 [2022-11-02 20:56:48,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:56:48,278 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 6424 mSDsluCounter, 5232 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6424 SdHoareTripleChecker+Valid, 6011 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:48,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6424 Valid, 6011 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-02 20:56:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2022-11-02 20:56:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 2493. [2022-11-02 20:56:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2492 states have (on average 1.4959871589085072) internal successors, (3728), 2492 states have internal predecessors, (3728), 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) [2022-11-02 20:56:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 3728 transitions. [2022-11-02 20:56:48,356 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 3728 transitions. Word has length 538 [2022-11-02 20:56:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:48,357 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 3728 transitions. [2022-11-02 20:56:48,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.8) internal successors, (538), 10 states have internal predecessors, (538), 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) [2022-11-02 20:56:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 3728 transitions. [2022-11-02 20:56:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-11-02 20:56:48,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:48,366 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:48,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:56:48,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:48,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:48,368 INFO L85 PathProgramCache]: Analyzing trace with hash 816014817, now seen corresponding path program 1 times [2022-11-02 20:56:48,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:48,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512974622] [2022-11-02 20:56:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:48,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat