./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 42cb47d17200048b14811b4ea8d60759bded6ec8fe8815c3e841b46a3cafae19 --- 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-b5237d8 [2022-11-22 00:13:15,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:13:15,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:13:15,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:13:15,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:13:15,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:13:15,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:13:15,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:13:15,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:13:15,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:13:15,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:13:15,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:13:15,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:13:15,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:13:15,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:13:15,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:13:15,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:13:15,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:13:15,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:13:15,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:13:15,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:13:15,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:13:15,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:13:15,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:13:15,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:13:15,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:13:15,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:13:15,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:13:15,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:13:15,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:13:15,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:13:15,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:13:15,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:13:15,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:13:15,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:13:15,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:13:15,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:13:15,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:13:15,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:13:15,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:13:15,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:13:15,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 00:13:15,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:13:15,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:13:15,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:13:15,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:13:15,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:13:15,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:13:15,299 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:13:15,299 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:13:15,299 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:13:15,300 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:13:15,300 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:13:15,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:13:15,301 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:13:15,301 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:13:15,301 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:13:15,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:13:15,302 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:13:15,302 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:13:15,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:13:15,304 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:13:15,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:13:15,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:13:15,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:13:15,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:13:15,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:13:15,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:13:15,306 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:13:15,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:13:15,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:13:15,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:13:15,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:13:15,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:13:15,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:13:15,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:13:15,308 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:13:15,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:13:15,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:13:15,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:13:15,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:13:15,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:13:15,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:13:15,310 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_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42cb47d17200048b14811b4ea8d60759bded6ec8fe8815c3e841b46a3cafae19 [2022-11-22 00:13:15,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:13:15,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:13:15,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:13:15,749 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:13:15,750 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:13:15,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c [2022-11-22 00:13:19,254 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:13:20,144 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:13:20,145 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c [2022-11-22 00:13:20,231 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/data/10982f582/0de012b9993c4a608368f7dcda4fe743/FLAG7fe32e2c2 [2022-11-22 00:13:20,252 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/data/10982f582/0de012b9993c4a608368f7dcda4fe743 [2022-11-22 00:13:20,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:13:20,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:13:20,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:13:20,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:13:20,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:13:20,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:13:20" (1/1) ... [2022-11-22 00:13:20,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c58bfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:20, skipping insertion in model container [2022-11-22 00:13:20,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:13:20" (1/1) ... [2022-11-22 00:13:20,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:13:20,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:13:23,686 WARN L237 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_92b80ee4-a16a-47fc-adc3-a68adddca16f/sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c[381679,381692] [2022-11-22 00:13:23,720 WARN L237 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_92b80ee4-a16a-47fc-adc3-a68adddca16f/sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c[383339,383352] [2022-11-22 00:13:24,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:13:24,139 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:13:25,476 WARN L237 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_92b80ee4-a16a-47fc-adc3-a68adddca16f/sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c[381679,381692] [2022-11-22 00:13:25,483 WARN L237 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_92b80ee4-a16a-47fc-adc3-a68adddca16f/sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c[383339,383352] [2022-11-22 00:13:25,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:13:25,601 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:13:25,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25 WrapperNode [2022-11-22 00:13:25,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:13:25,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:13:25,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:13:25,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:13:25,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:25,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,198 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13202 [2022-11-22 00:13:26,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:13:26,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:13:26,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:13:26,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:13:26,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:13:26,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:13:26,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:13:26,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:13:26,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (1/1) ... [2022-11-22 00:13:26,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:13:26,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:13:26,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:13:27,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:13:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:13:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-22 00:13:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-22 00:13:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-22 00:13:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-22 00:13:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-22 00:13:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-22 00:13:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-22 00:13:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-22 00:13:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-22 00:13:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-22 00:13:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-22 00:13:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-22 00:13:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-22 00:13:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-22 00:13:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:13:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:13:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:13:27,248 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:13:27,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:13:38,965 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:13:42,793 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:13:42,793 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-22 00:13:42,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:13:42 BoogieIcfgContainer [2022-11-22 00:13:42,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:13:42,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:13:42,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:13:42,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:13:42,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:13:20" (1/3) ... [2022-11-22 00:13:42,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c051095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:13:42, skipping insertion in model container [2022-11-22 00:13:42,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:13:25" (2/3) ... [2022-11-22 00:13:42,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c051095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:13:42, skipping insertion in model container [2022-11-22 00:13:42,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:13:42" (3/3) ... [2022-11-22 00:13:42,813 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.14.cil.c [2022-11-22 00:13:42,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:13:42,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 00:13:42,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:13:42,965 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=FINITE_AUTOMATA, 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;@1f8d07ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:13:42,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 00:13:42,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 1837 states, 1799 states have (on average 1.9560867148415786) internal successors, (3519), 1804 states have internal predecessors, (3519), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-22 00:13:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 00:13:43,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:13:43,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:13:43,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:13:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:13:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1944780209, now seen corresponding path program 1 times [2022-11-22 00:13:43,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:13:43,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670720230] [2022-11-22 00:13:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:43,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:13:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:13:43,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:13:43,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670720230] [2022-11-22 00:13:43,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670720230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:13:43,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:13:43,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:13:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030429228] [2022-11-22 00:13:43,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:13:43,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:13:43,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:13:43,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:13:43,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:13:43,839 INFO L87 Difference]: Start difference. First operand has 1837 states, 1799 states have (on average 1.9560867148415786) internal successors, (3519), 1804 states have internal predecessors, (3519), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 00:13:45,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:13:45,533 INFO L93 Difference]: Finished difference Result 3844 states and 7447 transitions. [2022-11-22 00:13:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:13:45,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-22 00:13:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:13:45,563 INFO L225 Difference]: With dead ends: 3844 [2022-11-22 00:13:45,564 INFO L226 Difference]: Without dead ends: 2006 [2022-11-22 00:13:45,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:13:45,578 INFO L413 NwaCegarLoop]: 3519 mSDtfsCounter, 3787 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 6938 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:13:45,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3787 Valid, 6938 Invalid, 742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 00:13:45,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2022-11-22 00:13:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 2005. [2022-11-22 00:13:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 1941 states have (on average 1.919629057187017) internal successors, (3726), 1945 states have internal predecessors, (3726), 50 states have call successors, (50), 13 states have call predecessors, (50), 12 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-22 00:13:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 3824 transitions. [2022-11-22 00:13:45,781 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 3824 transitions. Word has length 68 [2022-11-22 00:13:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:13:45,782 INFO L495 AbstractCegarLoop]: Abstraction has 2005 states and 3824 transitions. [2022-11-22 00:13:45,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 00:13:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 3824 transitions. [2022-11-22 00:13:45,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 00:13:45,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:13:45,802 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 00:13:45,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:13:45,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:13:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:13:45,805 INFO L85 PathProgramCache]: Analyzing trace with hash -614670115, now seen corresponding path program 1 times [2022-11-22 00:13:45,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:13:45,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149808428] [2022-11-22 00:13:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:45,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:13:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:13:46,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:13:46,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149808428] [2022-11-22 00:13:46,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149808428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:13:46,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120973937] [2022-11-22 00:13:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:46,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:46,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:13:46,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:13:46,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:13:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:46,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:13:46,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:13:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 00:13:46,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:13:46,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120973937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:13:46,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:13:46,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 00:13:46,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033247085] [2022-11-22 00:13:46,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:13:46,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:13:46,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:13:46,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:13:46,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:46,771 INFO L87 Difference]: Start difference. First operand 2005 states and 3824 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:47,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:13:47,462 INFO L93 Difference]: Finished difference Result 2716 states and 4939 transitions. [2022-11-22 00:13:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:13:47,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-22 00:13:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:13:47,486 INFO L225 Difference]: With dead ends: 2716 [2022-11-22 00:13:47,486 INFO L226 Difference]: Without dead ends: 2357 [2022-11-22 00:13:47,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:47,490 INFO L413 NwaCegarLoop]: 3359 mSDtfsCounter, 3515 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:13:47,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3515 Valid, 3592 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:13:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2022-11-22 00:13:47,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2351. [2022-11-22 00:13:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 2233 states have (on average 1.8669950738916257) internal successors, (4169), 2238 states have internal predecessors, (4169), 92 states have call successors, (92), 25 states have call predecessors, (92), 24 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-11-22 00:13:47,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 4351 transitions. [2022-11-22 00:13:47,626 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 4351 transitions. Word has length 137 [2022-11-22 00:13:47,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:13:47,630 INFO L495 AbstractCegarLoop]: Abstraction has 2351 states and 4351 transitions. [2022-11-22 00:13:47,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 4351 transitions. [2022-11-22 00:13:47,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 00:13:47,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:13:47,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 00:13:47,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:13:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:47,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:13:47,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:13:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash -585783875, now seen corresponding path program 1 times [2022-11-22 00:13:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:13:47,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252162625] [2022-11-22 00:13:47,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:47,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:13:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:13:48,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:13:48,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252162625] [2022-11-22 00:13:48,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252162625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:13:48,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296779247] [2022-11-22 00:13:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:48,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:48,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:13:48,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:13:48,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:13:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:48,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:13:48,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:13:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-22 00:13:48,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:13:48,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296779247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:13:48,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:13:48,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 00:13:48,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073523023] [2022-11-22 00:13:48,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:13:48,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:13:48,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:13:48,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:13:48,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:48,482 INFO L87 Difference]: Start difference. First operand 2351 states and 4351 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:13:49,320 INFO L93 Difference]: Finished difference Result 3748 states and 6538 transitions. [2022-11-22 00:13:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:13:49,322 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-22 00:13:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:13:49,342 INFO L225 Difference]: With dead ends: 3748 [2022-11-22 00:13:49,343 INFO L226 Difference]: Without dead ends: 3043 [2022-11-22 00:13:49,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:49,356 INFO L413 NwaCegarLoop]: 3358 mSDtfsCounter, 3527 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 3591 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:13:49,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 3591 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:13:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2022-11-22 00:13:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3035. [2022-11-22 00:13:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2811 states have (on average 1.7940234791889007) internal successors, (5043), 2818 states have internal predecessors, (5043), 174 states have call successors, (174), 49 states have call predecessors, (174), 48 states have return successors, (172), 168 states have call predecessors, (172), 172 states have call successors, (172) [2022-11-22 00:13:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 5389 transitions. [2022-11-22 00:13:49,515 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 5389 transitions. Word has length 137 [2022-11-22 00:13:49,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:13:49,516 INFO L495 AbstractCegarLoop]: Abstraction has 3035 states and 5389 transitions. [2022-11-22 00:13:49,516 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 5389 transitions. [2022-11-22 00:13:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 00:13:49,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:13:49,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 00:13:49,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:13:49,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-22 00:13:49,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:13:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:13:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash 242096797, now seen corresponding path program 1 times [2022-11-22 00:13:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:13:49,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986570599] [2022-11-22 00:13:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:49,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:13:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:13:50,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:13:50,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986570599] [2022-11-22 00:13:50,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986570599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:13:50,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105646889] [2022-11-22 00:13:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:50,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:50,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:13:50,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:13:50,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:13:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:50,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:13:50,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:13:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-22 00:13:50,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:13:50,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105646889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:13:50,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:13:50,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 00:13:50,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262754742] [2022-11-22 00:13:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:13:50,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:13:50,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:13:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:13:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:50,413 INFO L87 Difference]: Start difference. First operand 3035 states and 5389 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:13:51,373 INFO L93 Difference]: Finished difference Result 5788 states and 9686 transitions. [2022-11-22 00:13:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:13:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-22 00:13:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:13:51,396 INFO L225 Difference]: With dead ends: 5788 [2022-11-22 00:13:51,397 INFO L226 Difference]: Without dead ends: 4399 [2022-11-22 00:13:51,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:51,405 INFO L413 NwaCegarLoop]: 3357 mSDtfsCounter, 3536 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:13:51,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3536 Valid, 3590 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:13:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2022-11-22 00:13:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4387. [2022-11-22 00:13:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 3955 states have (on average 1.710998735777497) internal successors, (6767), 3966 states have internal predecessors, (6767), 334 states have call successors, (334), 97 states have call predecessors, (334), 96 states have return successors, (332), 324 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-22 00:13:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 7433 transitions. [2022-11-22 00:13:51,644 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 7433 transitions. Word has length 137 [2022-11-22 00:13:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:13:51,645 INFO L495 AbstractCegarLoop]: Abstraction has 4387 states and 7433 transitions. [2022-11-22 00:13:51,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 7433 transitions. [2022-11-22 00:13:51,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 00:13:51,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:13:51,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 00:13:51,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:13:51,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:51,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:13:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:13:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash -409263683, now seen corresponding path program 1 times [2022-11-22 00:13:51,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:13:51,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160589878] [2022-11-22 00:13:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:51,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:13:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:13:52,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:13:52,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160589878] [2022-11-22 00:13:52,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160589878] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:13:52,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060310375] [2022-11-22 00:13:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:52,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:52,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:13:52,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:13:52,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:13:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:52,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:13:52,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:13:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-22 00:13:52,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:13:52,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060310375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:13:52,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:13:52,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 00:13:52,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504607337] [2022-11-22 00:13:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:13:52,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:13:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:13:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:13:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:52,602 INFO L87 Difference]: Start difference. First operand 4387 states and 7433 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:13:53,671 INFO L93 Difference]: Finished difference Result 9820 states and 15882 transitions. [2022-11-22 00:13:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:13:53,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-22 00:13:53,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:13:53,729 INFO L225 Difference]: With dead ends: 9820 [2022-11-22 00:13:53,730 INFO L226 Difference]: Without dead ends: 7079 [2022-11-22 00:13:53,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:53,755 INFO L413 NwaCegarLoop]: 3318 mSDtfsCounter, 3533 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:13:53,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 3551 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:13:53,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7079 states. [2022-11-22 00:13:54,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7079 to 7059. [2022-11-22 00:13:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7059 states, 6219 states have (on average 1.6348287506029908) internal successors, (10167), 6238 states have internal predecessors, (10167), 646 states have call successors, (646), 193 states have call predecessors, (646), 192 states have return successors, (644), 628 states have call predecessors, (644), 644 states have call successors, (644) [2022-11-22 00:13:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 11457 transitions. [2022-11-22 00:13:54,317 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 11457 transitions. Word has length 137 [2022-11-22 00:13:54,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:13:54,317 INFO L495 AbstractCegarLoop]: Abstraction has 7059 states and 11457 transitions. [2022-11-22 00:13:54,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 11457 transitions. [2022-11-22 00:13:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 00:13:54,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:13:54,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 00:13:54,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:13:54,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:54,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:13:54,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:13:54,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1396731549, now seen corresponding path program 1 times [2022-11-22 00:13:54,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:13:54,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699104638] [2022-11-22 00:13:54,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:54,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:13:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:13:54,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:13:54,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699104638] [2022-11-22 00:13:54,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699104638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:13:54,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568694815] [2022-11-22 00:13:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:54,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:54,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:13:54,899 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:13:54,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:13:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:55,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:13:55,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:13:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 00:13:55,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:13:55,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568694815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:13:55,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:13:55,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 00:13:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905069999] [2022-11-22 00:13:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:13:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:13:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:13:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:13:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:55,384 INFO L87 Difference]: Start difference. First operand 7059 states and 11457 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:56,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:13:56,810 INFO L93 Difference]: Finished difference Result 17788 states and 28074 transitions. [2022-11-22 00:13:56,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:13:56,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-22 00:13:56,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:13:56,891 INFO L225 Difference]: With dead ends: 17788 [2022-11-22 00:13:56,891 INFO L226 Difference]: Without dead ends: 12375 [2022-11-22 00:13:56,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:56,917 INFO L413 NwaCegarLoop]: 3318 mSDtfsCounter, 3506 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3506 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:13:56,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3506 Valid, 3551 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:13:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12375 states. [2022-11-22 00:13:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12375 to 12339. [2022-11-22 00:13:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12339 states, 10699 states have (on average 1.5768763435835125) internal successors, (16871), 10734 states have internal predecessors, (16871), 1254 states have call successors, (1254), 385 states have call predecessors, (1254), 384 states have return successors, (1252), 1220 states have call predecessors, (1252), 1252 states have call successors, (1252) [2022-11-22 00:13:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12339 states to 12339 states and 19377 transitions. [2022-11-22 00:13:57,854 INFO L78 Accepts]: Start accepts. Automaton has 12339 states and 19377 transitions. Word has length 137 [2022-11-22 00:13:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:13:57,855 INFO L495 AbstractCegarLoop]: Abstraction has 12339 states and 19377 transitions. [2022-11-22 00:13:57,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:13:57,856 INFO L276 IsEmpty]: Start isEmpty. Operand 12339 states and 19377 transitions. [2022-11-22 00:13:57,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 00:13:57,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:13:57,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 00:13:57,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:13:58,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:58,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:13:58,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:13:58,096 INFO L85 PathProgramCache]: Analyzing trace with hash -217272899, now seen corresponding path program 1 times [2022-11-22 00:13:58,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:13:58,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575758619] [2022-11-22 00:13:58,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:58,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:13:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:13:58,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:13:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575758619] [2022-11-22 00:13:58,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575758619] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:13:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377122385] [2022-11-22 00:13:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:13:58,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:13:58,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:13:58,348 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:13:58,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:13:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:13:58,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:13:58,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:13:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:13:58,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:13:58,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377122385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:13:58,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:13:58,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 00:13:58,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216682829] [2022-11-22 00:13:58,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:13:58,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:13:58,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:13:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:13:58,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:13:58,812 INFO L87 Difference]: Start difference. First operand 12339 states and 19377 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:14:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:14:00,456 INFO L93 Difference]: Finished difference Result 33532 states and 52058 transitions. [2022-11-22 00:14:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:14:00,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-22 00:14:00,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:14:00,591 INFO L225 Difference]: With dead ends: 33532 [2022-11-22 00:14:00,592 INFO L226 Difference]: Without dead ends: 22839 [2022-11-22 00:14:00,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:14:00,650 INFO L413 NwaCegarLoop]: 3318 mSDtfsCounter, 3509 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3509 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:14:00,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3509 Valid, 3551 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:14:00,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22839 states. [2022-11-22 00:14:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22839 to 22771. [2022-11-22 00:14:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22771 states, 19563 states have (on average 1.537954301487502) internal successors, (30087), 19630 states have internal predecessors, (30087), 2438 states have call successors, (2438), 769 states have call predecessors, (2438), 768 states have return successors, (2436), 2372 states have call predecessors, (2436), 2436 states have call successors, (2436) [2022-11-22 00:14:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22771 states to 22771 states and 34961 transitions. [2022-11-22 00:14:02,315 INFO L78 Accepts]: Start accepts. Automaton has 22771 states and 34961 transitions. Word has length 137 [2022-11-22 00:14:02,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:14:02,316 INFO L495 AbstractCegarLoop]: Abstraction has 22771 states and 34961 transitions. [2022-11-22 00:14:02,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:14:02,321 INFO L276 IsEmpty]: Start isEmpty. Operand 22771 states and 34961 transitions. [2022-11-22 00:14:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 00:14:02,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:14:02,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 00:14:02,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:14:02,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:14:02,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:14:02,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:14:02,581 INFO L85 PathProgramCache]: Analyzing trace with hash -864904547, now seen corresponding path program 1 times [2022-11-22 00:14:02,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:14:02,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453213162] [2022-11-22 00:14:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:14:02,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:14:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:14:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 00:14:02,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:14:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453213162] [2022-11-22 00:14:02,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453213162] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:14:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185235006] [2022-11-22 00:14:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:14:02,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:14:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:14:02,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:14:03,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:14:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:14:03,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:14:03,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:14:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-22 00:14:03,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:14:03,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185235006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:14:03,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:14:03,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 00:14:03,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833681082] [2022-11-22 00:14:03,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:14:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:14:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:14:03,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:14:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:14:03,468 INFO L87 Difference]: Start difference. First operand 22771 states and 34961 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:14:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:14:06,572 INFO L93 Difference]: Finished difference Result 64636 states and 99226 transitions. [2022-11-22 00:14:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:14:06,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2022-11-22 00:14:06,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:14:06,808 INFO L225 Difference]: With dead ends: 64636 [2022-11-22 00:14:06,808 INFO L226 Difference]: Without dead ends: 43511 [2022-11-22 00:14:06,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:14:06,885 INFO L413 NwaCegarLoop]: 3318 mSDtfsCounter, 3521 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3521 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:14:06,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3521 Valid, 3551 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:14:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43511 states. [2022-11-22 00:14:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43511 to 43379. [2022-11-22 00:14:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43379 states, 37099 states have (on average 1.5131135610124262) internal successors, (56135), 37230 states have internal predecessors, (56135), 4742 states have call successors, (4742), 1537 states have call predecessors, (4742), 1536 states have return successors, (4740), 4612 states have call predecessors, (4740), 4740 states have call successors, (4740) [2022-11-22 00:14:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43379 states to 43379 states and 65617 transitions. [2022-11-22 00:14:09,603 INFO L78 Accepts]: Start accepts. Automaton has 43379 states and 65617 transitions. Word has length 137 [2022-11-22 00:14:09,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:14:09,604 INFO L495 AbstractCegarLoop]: Abstraction has 43379 states and 65617 transitions. [2022-11-22 00:14:09,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-22 00:14:09,604 INFO L276 IsEmpty]: Start isEmpty. Operand 43379 states and 65617 transitions. [2022-11-22 00:14:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 00:14:09,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:14:09,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-22 00:14:09,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 00:14:09,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:14:09,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:14:09,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:14:09,883 INFO L85 PathProgramCache]: Analyzing trace with hash 855390077, now seen corresponding path program 1 times [2022-11-22 00:14:09,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:14:09,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815725306] [2022-11-22 00:14:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:14:09,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:14:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:14:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-22 00:14:10,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:14:10,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815725306] [2022-11-22 00:14:10,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815725306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:14:10,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:14:10,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:14:10,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869020298] [2022-11-22 00:14:10,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:14:10,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:14:10,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:14:10,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:14:10,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:14:10,675 INFO L87 Difference]: Start difference. First operand 43379 states and 65617 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 00:14:18,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:14:18,567 INFO L93 Difference]: Finished difference Result 147579 states and 220888 transitions. [2022-11-22 00:14:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:14:18,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 137 [2022-11-22 00:14:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:14:19,259 INFO L225 Difference]: With dead ends: 147579 [2022-11-22 00:14:19,260 INFO L226 Difference]: Without dead ends: 105847 [2022-11-22 00:14:19,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:14:19,433 INFO L413 NwaCegarLoop]: 3318 mSDtfsCounter, 4355 mSDsluCounter, 9773 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4376 SdHoareTripleChecker+Valid, 13091 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:14:19,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4376 Valid, 13091 Invalid, 1379 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [153 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 00:14:19,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105847 states. [2022-11-22 00:14:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105847 to 83571. [2022-11-22 00:14:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83571 states, 71275 states have (on average 1.4969484391441599) internal successors, (106695), 71534 states have internal predecessors, (106695), 9222 states have call successors, (9222), 3073 states have call predecessors, (9222), 3072 states have return successors, (9220), 8964 states have call predecessors, (9220), 9220 states have call successors, (9220) [2022-11-22 00:14:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83571 states to 83571 states and 125137 transitions. [2022-11-22 00:14:26,640 INFO L78 Accepts]: Start accepts. Automaton has 83571 states and 125137 transitions. Word has length 137 [2022-11-22 00:14:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:14:26,641 INFO L495 AbstractCegarLoop]: Abstraction has 83571 states and 125137 transitions. [2022-11-22 00:14:26,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-22 00:14:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 83571 states and 125137 transitions. [2022-11-22 00:14:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-22 00:14:26,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:14:26,841 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:14:26,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:14:26,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:14:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:14:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1764658335, now seen corresponding path program 1 times [2022-11-22 00:14:26,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:14:26,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623869947] [2022-11-22 00:14:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:14:26,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:14:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:14:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 00:14:27,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:14:27,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623869947] [2022-11-22 00:14:27,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623869947] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:14:27,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632165769] [2022-11-22 00:14:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:14:27,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:14:27,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:14:27,384 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:14:27,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92b80ee4-a16a-47fc-adc3-a68adddca16f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:14:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:14:27,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:14:27,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:14:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-22 00:14:27,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:14:27,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632165769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:14:27,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:14:27,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-22 00:14:27,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222814523] [2022-11-22 00:14:27,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:14:27,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:14:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:14:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:14:27,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:14:27,802 INFO L87 Difference]: Start difference. First operand 83571 states and 125137 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 00:14:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:14:33,839 INFO L93 Difference]: Finished difference Result 147191 states and 223572 transitions. [2022-11-22 00:14:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:14:33,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 159 [2022-11-22 00:14:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:14:34,525 INFO L225 Difference]: With dead ends: 147191 [2022-11-22 00:14:34,525 INFO L226 Difference]: Without dead ends: 105203 [2022-11-22 00:14:34,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:14:34,705 INFO L413 NwaCegarLoop]: 3428 mSDtfsCounter, 125 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 6738 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:14:34,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 6738 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:14:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105203 states.