./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7 --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 82b978acf3e870955535549d16879da8eac705f6c266c172b47775a3acd47fc6 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:20:08,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:20:08,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:20:08,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:20:08,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:20:08,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:20:08,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:20:08,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:20:08,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:20:08,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:20:08,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:20:08,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:20:08,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:20:08,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:20:08,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:20:08,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:20:08,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:20:08,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:20:08,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:20:08,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:20:08,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:20:08,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:20:08,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:20:08,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:20:08,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:20:08,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:20:08,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:20:08,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:20:08,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:20:08,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:20:08,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:20:08,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:20:08,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:20:08,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:20:08,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:20:08,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:20:08,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:20:08,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:20:08,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:20:08,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:20:08,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:20:08,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:20:08,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:20:08,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:20:08,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:20:08,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:20:08,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:20:08,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:20:08,474 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:20:08,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:20:08,475 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:20:08,475 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:20:08,476 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:20:08,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:20:08,477 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:20:08,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:20:08,478 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:20:08,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:20:08,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:20:08,478 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:20:08,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:20:08,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:20:08,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:20:08,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:20:08,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:20:08,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:20:08,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:20:08,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:20:08,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:20:08,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:20:08,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:20:08,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:20:08,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:20:08,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:20:08,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:20:08,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:20:08,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:20:08,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:20:08,486 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:20:08,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:20:08,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:20:08,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:20:08,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:20:08,488 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82b978acf3e870955535549d16879da8eac705f6c266c172b47775a3acd47fc6 [2021-11-25 18:20:08,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:20:08,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:20:08,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:20:08,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:20:08,814 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:20:08,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-25 18:20:08,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/data/f461da18f/eeaad1c99d3546689a5f0a9fa81b8761/FLAG6915b414b [2021-11-25 18:20:09,889 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:20:09,890 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-25 18:20:09,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/data/f461da18f/eeaad1c99d3546689a5f0a9fa81b8761/FLAG6915b414b [2021-11-25 18:20:10,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/data/f461da18f/eeaad1c99d3546689a5f0a9fa81b8761 [2021-11-25 18:20:10,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:20:10,245 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:20:10,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:20:10,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:20:10,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:20:10,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:20:10" (1/1) ... [2021-11-25 18:20:10,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4e68b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:10, skipping insertion in model container [2021-11-25 18:20:10,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:20:10" (1/1) ... [2021-11-25 18:20:10,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:20:10,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:20:11,983 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[40132,40145] [2021-11-25 18:20:16,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:20:16,136 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:20:16,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[40132,40145] [2021-11-25 18:20:20,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:20:20,230 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:20:20,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20 WrapperNode [2021-11-25 18:20:20,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:20:20,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:20:20,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:20:20,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:20:20,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:20,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:20,644 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22648 [2021-11-25 18:20:20,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:20:20,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:20:20,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:20:20,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:20:20,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:20,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:20,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:20,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:21,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:21,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:21,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:21,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:20:21,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:20:21,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:20:21,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:20:21,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (1/1) ... [2021-11-25 18:20:21,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:20:21,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:20:21,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:20:21,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33f7a9b9-66e6-4745-af85-6a31839f644f/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:20:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:20:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:20:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:20:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:20:22,112 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:20:22,113 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:20:35,372 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:20:56,165 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:20:56,166 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:20:56,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:20:56 BoogieIcfgContainer [2021-11-25 18:20:56,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:20:56,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:20:56,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:20:56,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:20:56,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:20:10" (1/3) ... [2021-11-25 18:20:56,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1265473e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:20:56, skipping insertion in model container [2021-11-25 18:20:56,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:20:20" (2/3) ... [2021-11-25 18:20:56,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1265473e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:20:56, skipping insertion in model container [2021-11-25 18:20:56,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:20:56" (3/3) ... [2021-11-25 18:20:56,201 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-25 18:20:56,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:20:56,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:20:56,314 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:20:56,323 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:20:56,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:20:56,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 5197 states, 5195 states have (on average 1.7027911453320501) internal successors, (8846), 5196 states have internal predecessors, (8846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:20:56,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-25 18:20:56,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:20:56,523 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:20:56,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:20:56,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:20:56,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2055199063, now seen corresponding path program 1 times [2021-11-25 18:20:56,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:20:56,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857919782] [2021-11-25 18:20:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:20:56,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:20:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:20:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:20:57,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:20:57,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857919782] [2021-11-25 18:20:57,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857919782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:20:57,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:20:57,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:20:57,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87364979] [2021-11-25 18:20:57,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:20:57,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:20:57,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:20:57,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:20:57,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:20:57,734 INFO L87 Difference]: Start difference. First operand has 5197 states, 5195 states have (on average 1.7027911453320501) internal successors, (8846), 5196 states have internal predecessors, (8846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:20:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:20:59,655 INFO L93 Difference]: Finished difference Result 10178 states and 17151 transitions. [2021-11-25 18:20:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:20:59,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2021-11-25 18:20:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:20:59,732 INFO L225 Difference]: With dead ends: 10178 [2021-11-25 18:20:59,733 INFO L226 Difference]: Without dead ends: 6100 [2021-11-25 18:20:59,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:20:59,982 INFO L933 BasicCegarLoop]: 7863 mSDtfsCounter, 5774 mSDsluCounter, 4473 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5774 SdHoareTripleChecker+Valid, 12205 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:20:59,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5774 Valid, 12205 Invalid, 374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 18:21:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6100 states. [2021-11-25 18:21:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6100 to 6098. [2021-11-25 18:21:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6098 states, 6097 states have (on average 1.6058717402000984) internal successors, (9791), 6097 states have internal predecessors, (9791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6098 states to 6098 states and 9791 transitions. [2021-11-25 18:21:00,389 INFO L78 Accepts]: Start accepts. Automaton has 6098 states and 9791 transitions. Word has length 270 [2021-11-25 18:21:00,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:00,393 INFO L470 AbstractCegarLoop]: Abstraction has 6098 states and 9791 transitions. [2021-11-25 18:21:00,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6098 states and 9791 transitions. [2021-11-25 18:21:00,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-25 18:21:00,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:00,420 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:00,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:21:00,421 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:00,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash 619259272, now seen corresponding path program 1 times [2021-11-25 18:21:00,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:00,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278161427] [2021-11-25 18:21:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:00,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:00,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:00,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278161427] [2021-11-25 18:21:00,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278161427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:00,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:00,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:00,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073902549] [2021-11-25 18:21:00,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:00,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:00,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:00,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:00,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:00,844 INFO L87 Difference]: Start difference. First operand 6098 states and 9791 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:02,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:02,402 INFO L93 Difference]: Finished difference Result 13278 states and 21442 transitions. [2021-11-25 18:21:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:02,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2021-11-25 18:21:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:02,474 INFO L225 Difference]: With dead ends: 13278 [2021-11-25 18:21:02,474 INFO L226 Difference]: Without dead ends: 8002 [2021-11-25 18:21:02,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:02,497 INFO L933 BasicCegarLoop]: 6776 mSDtfsCounter, 5620 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5620 SdHoareTripleChecker+Valid, 10314 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:02,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5620 Valid, 10314 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:21:02,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2021-11-25 18:21:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 8000. [2021-11-25 18:21:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8000 states, 7999 states have (on average 1.6145768221027628) internal successors, (12915), 7999 states have internal predecessors, (12915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8000 states to 8000 states and 12915 transitions. [2021-11-25 18:21:03,228 INFO L78 Accepts]: Start accepts. Automaton has 8000 states and 12915 transitions. Word has length 280 [2021-11-25 18:21:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:03,235 INFO L470 AbstractCegarLoop]: Abstraction has 8000 states and 12915 transitions. [2021-11-25 18:21:03,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8000 states and 12915 transitions. [2021-11-25 18:21:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-25 18:21:03,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:03,261 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:03,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:21:03,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:03,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2070702762, now seen corresponding path program 1 times [2021-11-25 18:21:03,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:03,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972870208] [2021-11-25 18:21:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:03,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:03,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:03,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972870208] [2021-11-25 18:21:03,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972870208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:03,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:03,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:03,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002544515] [2021-11-25 18:21:03,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:03,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:03,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:03,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:03,577 INFO L87 Difference]: Start difference. First operand 8000 states and 12915 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:05,381 INFO L93 Difference]: Finished difference Result 18380 states and 29684 transitions. [2021-11-25 18:21:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:05,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2021-11-25 18:21:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:05,486 INFO L225 Difference]: With dead ends: 18380 [2021-11-25 18:21:05,486 INFO L226 Difference]: Without dead ends: 11065 [2021-11-25 18:21:05,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:05,513 INFO L933 BasicCegarLoop]: 6846 mSDtfsCounter, 5565 mSDsluCounter, 3441 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5565 SdHoareTripleChecker+Valid, 10169 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:05,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5565 Valid, 10169 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 18:21:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2021-11-25 18:21:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 11063. [2021-11-25 18:21:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11063 states, 11062 states have (on average 1.6116434641113722) internal successors, (17828), 11062 states have internal predecessors, (17828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11063 states to 11063 states and 17828 transitions. [2021-11-25 18:21:06,220 INFO L78 Accepts]: Start accepts. Automaton has 11063 states and 17828 transitions. Word has length 290 [2021-11-25 18:21:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:06,221 INFO L470 AbstractCegarLoop]: Abstraction has 11063 states and 17828 transitions. [2021-11-25 18:21:06,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 11063 states and 17828 transitions. [2021-11-25 18:21:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-25 18:21:06,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:06,248 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:06,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:21:06,249 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:06,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2057391498, now seen corresponding path program 1 times [2021-11-25 18:21:06,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:06,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216622568] [2021-11-25 18:21:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:06,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:06,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216622568] [2021-11-25 18:21:06,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216622568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:06,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:06,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:06,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299916628] [2021-11-25 18:21:06,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:06,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:06,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:06,531 INFO L87 Difference]: Start difference. First operand 11063 states and 17828 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:08,565 INFO L93 Difference]: Finished difference Result 26151 states and 42033 transitions. [2021-11-25 18:21:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:08,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2021-11-25 18:21:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:08,615 INFO L225 Difference]: With dead ends: 26151 [2021-11-25 18:21:08,615 INFO L226 Difference]: Without dead ends: 15718 [2021-11-25 18:21:08,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:08,644 INFO L933 BasicCegarLoop]: 6406 mSDtfsCounter, 5472 mSDsluCounter, 3354 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5472 SdHoareTripleChecker+Valid, 9644 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:08,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5472 Valid, 9644 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:21:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15718 states. [2021-11-25 18:21:09,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15718 to 15716. [2021-11-25 18:21:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15716 states, 15715 states have (on average 1.5994272987591474) internal successors, (25135), 15715 states have internal predecessors, (25135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15716 states to 15716 states and 25135 transitions. [2021-11-25 18:21:09,463 INFO L78 Accepts]: Start accepts. Automaton has 15716 states and 25135 transitions. Word has length 300 [2021-11-25 18:21:09,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:09,464 INFO L470 AbstractCegarLoop]: Abstraction has 15716 states and 25135 transitions. [2021-11-25 18:21:09,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:09,464 INFO L276 IsEmpty]: Start isEmpty. Operand 15716 states and 25135 transitions. [2021-11-25 18:21:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-25 18:21:09,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:09,498 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:09,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:21:09,499 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:09,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:09,500 INFO L85 PathProgramCache]: Analyzing trace with hash -682758036, now seen corresponding path program 1 times [2021-11-25 18:21:09,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:09,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005570788] [2021-11-25 18:21:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:09,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:09,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:09,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005570788] [2021-11-25 18:21:09,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005570788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:09,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:09,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:09,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689562868] [2021-11-25 18:21:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:09,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:09,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:09,750 INFO L87 Difference]: Start difference. First operand 15716 states and 25135 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:12,361 INFO L93 Difference]: Finished difference Result 37884 states and 60404 transitions. [2021-11-25 18:21:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:12,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2021-11-25 18:21:12,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:12,441 INFO L225 Difference]: With dead ends: 37884 [2021-11-25 18:21:12,441 INFO L226 Difference]: Without dead ends: 22784 [2021-11-25 18:21:12,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:12,473 INFO L933 BasicCegarLoop]: 6353 mSDtfsCounter, 5476 mSDsluCounter, 3360 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5476 SdHoareTripleChecker+Valid, 9591 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:12,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5476 Valid, 9591 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:21:12,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22784 states. [2021-11-25 18:21:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22784 to 22782. [2021-11-25 18:21:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22782 states, 22781 states have (on average 1.5799130854659584) internal successors, (35992), 22781 states have internal predecessors, (35992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22782 states to 22782 states and 35992 transitions. [2021-11-25 18:21:13,827 INFO L78 Accepts]: Start accepts. Automaton has 22782 states and 35992 transitions. Word has length 310 [2021-11-25 18:21:13,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:13,828 INFO L470 AbstractCegarLoop]: Abstraction has 22782 states and 35992 transitions. [2021-11-25 18:21:13,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:13,829 INFO L276 IsEmpty]: Start isEmpty. Operand 22782 states and 35992 transitions. [2021-11-25 18:21:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-25 18:21:13,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:13,881 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:13,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:21:13,882 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash 888697380, now seen corresponding path program 1 times [2021-11-25 18:21:13,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:13,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761844925] [2021-11-25 18:21:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:13,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:15,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:15,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761844925] [2021-11-25 18:21:15,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761844925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:15,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:15,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:21:15,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977262427] [2021-11-25 18:21:15,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:15,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:21:15,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:15,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:21:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:21:15,569 INFO L87 Difference]: Start difference. First operand 22782 states and 35992 transitions. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:19,741 INFO L93 Difference]: Finished difference Result 43646 states and 69588 transitions. [2021-11-25 18:21:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:21:19,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2021-11-25 18:21:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:19,848 INFO L225 Difference]: With dead ends: 43646 [2021-11-25 18:21:19,848 INFO L226 Difference]: Without dead ends: 37420 [2021-11-25 18:21:19,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:21:19,868 INFO L933 BasicCegarLoop]: 9654 mSDtfsCounter, 11343 mSDsluCounter, 9039 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11343 SdHoareTripleChecker+Valid, 18388 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:19,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11343 Valid, 18388 Invalid, 980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 18:21:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37420 states. [2021-11-25 18:21:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37420 to 29550. [2021-11-25 18:21:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29550 states, 29549 states have (on average 1.5754171037936986) internal successors, (46552), 29549 states have internal predecessors, (46552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29550 states to 29550 states and 46552 transitions. [2021-11-25 18:21:21,403 INFO L78 Accepts]: Start accepts. Automaton has 29550 states and 46552 transitions. Word has length 320 [2021-11-25 18:21:21,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:21,405 INFO L470 AbstractCegarLoop]: Abstraction has 29550 states and 46552 transitions. [2021-11-25 18:21:21,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 29550 states and 46552 transitions. [2021-11-25 18:21:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-25 18:21:21,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:21,455 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:21,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:21:21,455 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:21,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2083358008, now seen corresponding path program 1 times [2021-11-25 18:21:21,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:21,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493434275] [2021-11-25 18:21:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:21,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:22,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:22,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493434275] [2021-11-25 18:21:22,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493434275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:22,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:22,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:21:22,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034766315] [2021-11-25 18:21:22,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:22,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:21:22,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:22,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:21:22,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:21:22,225 INFO L87 Difference]: Start difference. First operand 29550 states and 46552 transitions. Second operand has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:25,905 INFO L93 Difference]: Finished difference Result 48159 states and 76698 transitions. [2021-11-25 18:21:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:21:25,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2021-11-25 18:21:25,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:26,027 INFO L225 Difference]: With dead ends: 48159 [2021-11-25 18:21:26,028 INFO L226 Difference]: Without dead ends: 43293 [2021-11-25 18:21:26,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:21:26,049 INFO L933 BasicCegarLoop]: 5124 mSDtfsCounter, 14956 mSDsluCounter, 15466 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14956 SdHoareTripleChecker+Valid, 20097 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:26,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14956 Valid, 20097 Invalid, 1032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 18:21:26,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43293 states. [2021-11-25 18:21:28,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43293 to 34581. [2021-11-25 18:21:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34581 states, 34580 states have (on average 1.5764314632735685) internal successors, (54513), 34580 states have internal predecessors, (54513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34581 states to 34581 states and 54513 transitions. [2021-11-25 18:21:28,391 INFO L78 Accepts]: Start accepts. Automaton has 34581 states and 54513 transitions. Word has length 320 [2021-11-25 18:21:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:28,392 INFO L470 AbstractCegarLoop]: Abstraction has 34581 states and 54513 transitions. [2021-11-25 18:21:28,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 34581 states and 54513 transitions. [2021-11-25 18:21:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-25 18:21:28,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:28,432 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:28,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:21:28,432 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:28,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash 593884132, now seen corresponding path program 1 times [2021-11-25 18:21:28,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:28,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395261289] [2021-11-25 18:21:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:28,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:29,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:29,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395261289] [2021-11-25 18:21:29,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395261289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:29,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:29,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:29,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477602789] [2021-11-25 18:21:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:29,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:21:29,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:29,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:21:29,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:21:29,184 INFO L87 Difference]: Start difference. First operand 34581 states and 54513 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:34,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:34,983 INFO L93 Difference]: Finished difference Result 103082 states and 162478 transitions. [2021-11-25 18:21:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:21:34,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2021-11-25 18:21:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:35,151 INFO L225 Difference]: With dead ends: 103082 [2021-11-25 18:21:35,151 INFO L226 Difference]: Without dead ends: 68512 [2021-11-25 18:21:35,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:21:35,406 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 14215 mSDsluCounter, 4761 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14215 SdHoareTripleChecker+Valid, 9351 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:35,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14215 Valid, 9351 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 18:21:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68512 states. [2021-11-25 18:21:40,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68512 to 68510. [2021-11-25 18:21:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68510 states, 68509 states have (on average 1.574143543184107) internal successors, (107843), 68509 states have internal predecessors, (107843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68510 states to 68510 states and 107843 transitions. [2021-11-25 18:21:40,690 INFO L78 Accepts]: Start accepts. Automaton has 68510 states and 107843 transitions. Word has length 320 [2021-11-25 18:21:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:40,690 INFO L470 AbstractCegarLoop]: Abstraction has 68510 states and 107843 transitions. [2021-11-25 18:21:40,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:21:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 68510 states and 107843 transitions. [2021-11-25 18:21:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-25 18:21:40,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:40,732 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:21:40,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:21:40,733 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:40,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:40,734 INFO L85 PathProgramCache]: Analyzing trace with hash 162575688, now seen corresponding path program 1 times [2021-11-25 18:21:40,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:40,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654226788] [2021-11-25 18:21:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:40,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:21:40,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:40,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654226788] [2021-11-25 18:21:40,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654226788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:40,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:40,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:40,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878754829] [2021-11-25 18:21:40,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:40,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:40,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:40,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:40,891 INFO L87 Difference]: Start difference. First operand 68510 states and 107843 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)