./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW --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 940a677bfde7dbbc79e036121bd0ec6fd3518c0f58a02d336e5d42fafb098792 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:06:52,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:06:52,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:06:52,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:06:52,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:06:52,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:06:52,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:06:52,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:06:52,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:06:52,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:06:52,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:06:52,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:06:52,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:06:52,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:06:52,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:06:52,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:06:52,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:06:52,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:06:52,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:06:52,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:06:52,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:06:52,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:06:52,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:06:52,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:06:52,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:06:52,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:06:52,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:06:52,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:06:52,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:06:52,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:06:52,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:06:52,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:06:52,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:06:52,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:06:52,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:06:52,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:06:52,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:06:52,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:06:52,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:06:52,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:06:52,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:06:52,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:06:52,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:06:52,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:06:52,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:06:52,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:06:52,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:06:52,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:06:52,394 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:06:52,394 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:06:52,395 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:06:52,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:06:52,395 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:06:52,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:06:52,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:06:52,396 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:06:52,396 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:06:52,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:06:52,397 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:06:52,397 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:06:52,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:06:52,398 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:06:52,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:06:52,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:06:52,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:06:52,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:06:52,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:06:52,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:06:52,400 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:06:52,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:06:52,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:06:52,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:06:52,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:06:52,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:06:52,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:06:52,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:06:52,402 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:06:52,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:06:52,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:06:52,403 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:06:52,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:06:52,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:06:52,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:06:52,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 940a677bfde7dbbc79e036121bd0ec6fd3518c0f58a02d336e5d42fafb098792 [2022-11-23 15:06:52,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:06:52,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:06:52,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:06:52,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:06:52,768 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:06:52,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/systemc/transmitter.11.cil.c [2022-11-23 15:06:55,803 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:06:56,059 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:06:56,059 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/sv-benchmarks/c/systemc/transmitter.11.cil.c [2022-11-23 15:06:56,071 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/data/f649a0208/621e101e8a68496cb82f3a209ff7151a/FLAGca43874d7 [2022-11-23 15:06:56,086 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/data/f649a0208/621e101e8a68496cb82f3a209ff7151a [2022-11-23 15:06:56,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:06:56,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:06:56,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:06:56,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:06:56,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:06:56,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a17792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56, skipping insertion in model container [2022-11-23 15:06:56,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:06:56,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:06:56,303 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/sv-benchmarks/c/systemc/transmitter.11.cil.c[706,719] [2022-11-23 15:06:56,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:06:56,468 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:06:56,480 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/sv-benchmarks/c/systemc/transmitter.11.cil.c[706,719] [2022-11-23 15:06:56,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:06:56,558 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:06:56,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56 WrapperNode [2022-11-23 15:06:56,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:06:56,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:06:56,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:06:56,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:06:56,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,628 INFO L138 Inliner]: procedures = 50, calls = 63, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 777 [2022-11-23 15:06:56,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:06:56,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:06:56,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:06:56,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:06:56,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,691 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:06:56,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:06:56,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:06:56,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:06:56,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 15:06:56,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:06:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:56,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:06:56,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af9922a-a043-4654-9400-2574c6450917/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:06:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:06:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 15:06:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 15:06:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 15:06:56,804 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 15:06:56,804 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 15:06:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 15:06:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 15:06:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 15:06:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 15:06:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 15:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 15:06:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 15:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:06:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:06:57,000 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:06:57,012 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:06:58,023 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:06:58,546 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:06:58,546 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-23 15:06:58,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:58 BoogieIcfgContainer [2022-11-23 15:06:58,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:06:58,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:06:58,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:06:58,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:06:58,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:06:56" (1/3) ... [2022-11-23 15:06:58,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e6d98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:58, skipping insertion in model container [2022-11-23 15:06:58,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (2/3) ... [2022-11-23 15:06:58,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e6d98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:58, skipping insertion in model container [2022-11-23 15:06:58,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:58" (3/3) ... [2022-11-23 15:06:58,565 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.11.cil.c [2022-11-23 15:06:58,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:06:58,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:06:58,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:06:58,667 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@338bfec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:06:58,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:06:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 143 states have (on average 1.5594405594405594) internal successors, (223), 145 states have internal predecessors, (223), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-23 15:06:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:06:58,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:58,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:58,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:58,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash 626698193, now seen corresponding path program 1 times [2022-11-23 15:06:58,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:58,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633085061] [2022-11-23 15:06:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:06:59,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:59,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633085061] [2022-11-23 15:06:59,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633085061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:59,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:59,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:06:59,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918310341] [2022-11-23 15:06:59,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:59,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:06:59,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:06:59,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:06:59,298 INFO L87 Difference]: Start difference. First operand has 175 states, 143 states have (on average 1.5594405594405594) internal successors, (223), 145 states have internal predecessors, (223), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:06:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:59,818 INFO L93 Difference]: Finished difference Result 512 states and 807 transitions. [2022-11-23 15:06:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:06:59,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2022-11-23 15:06:59,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:59,841 INFO L225 Difference]: With dead ends: 512 [2022-11-23 15:06:59,842 INFO L226 Difference]: Without dead ends: 338 [2022-11-23 15:06:59,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:06:59,851 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 474 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:59,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 746 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:06:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-23 15:06:59,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2022-11-23 15:06:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 277 states have (on average 1.51985559566787) internal successors, (421), 279 states have internal predecessors, (421), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-23 15:06:59,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 509 transitions. [2022-11-23 15:06:59,921 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 509 transitions. Word has length 73 [2022-11-23 15:06:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:59,922 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 509 transitions. [2022-11-23 15:06:59,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:06:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 509 transitions. [2022-11-23 15:06:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:06:59,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:59,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:59,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:06:59,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1203626834, now seen corresponding path program 1 times [2022-11-23 15:06:59,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:59,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998859439] [2022-11-23 15:06:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:07:00,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:00,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998859439] [2022-11-23 15:07:00,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998859439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:00,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:00,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:07:00,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442351488] [2022-11-23 15:07:00,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:00,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:07:00,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:00,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:07:00,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:07:00,139 INFO L87 Difference]: Start difference. First operand 334 states and 509 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:01,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:01,158 INFO L93 Difference]: Finished difference Result 1945 states and 3133 transitions. [2022-11-23 15:07:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:07:01,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2022-11-23 15:07:01,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:01,172 INFO L225 Difference]: With dead ends: 1945 [2022-11-23 15:07:01,172 INFO L226 Difference]: Without dead ends: 1616 [2022-11-23 15:07:01,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:07:01,178 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 1115 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:01,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 1214 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:07:01,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-11-23 15:07:01,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1580. [2022-11-23 15:07:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1327 states have (on average 1.5169555388093443) internal successors, (2013), 1335 states have internal predecessors, (2013), 192 states have call successors, (192), 60 states have call predecessors, (192), 60 states have return successors, (298), 185 states have call predecessors, (298), 192 states have call successors, (298) [2022-11-23 15:07:01,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2503 transitions. [2022-11-23 15:07:01,321 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2503 transitions. Word has length 73 [2022-11-23 15:07:01,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:01,322 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2503 transitions. [2022-11-23 15:07:01,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:01,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2503 transitions. [2022-11-23 15:07:01,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:07:01,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:01,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:07:01,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:07:01,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:01,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:01,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1443894163, now seen corresponding path program 1 times [2022-11-23 15:07:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:01,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441542860] [2022-11-23 15:07:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:07:01,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:01,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441542860] [2022-11-23 15:07:01,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441542860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:01,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:01,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:07:01,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696392700] [2022-11-23 15:07:01,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:01,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:07:01,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:01,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:07:01,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:07:01,536 INFO L87 Difference]: Start difference. First operand 1580 states and 2503 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:02,646 INFO L93 Difference]: Finished difference Result 6243 states and 10199 transitions. [2022-11-23 15:07:02,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:07:02,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2022-11-23 15:07:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:02,683 INFO L225 Difference]: With dead ends: 6243 [2022-11-23 15:07:02,683 INFO L226 Difference]: Without dead ends: 4668 [2022-11-23 15:07:02,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:07:02,699 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 1118 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:02,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 1226 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:07:02,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4668 states. [2022-11-23 15:07:03,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4668 to 4382. [2022-11-23 15:07:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 3775 states have (on average 1.5282119205298013) internal successors, (5769), 3725 states have internal predecessors, (5769), 442 states have call successors, (442), 148 states have call predecessors, (442), 164 states have return successors, (900), 509 states have call predecessors, (900), 442 states have call successors, (900) [2022-11-23 15:07:03,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 7111 transitions. [2022-11-23 15:07:03,072 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 7111 transitions. Word has length 73 [2022-11-23 15:07:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:03,074 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 7111 transitions. [2022-11-23 15:07:03,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 7111 transitions. [2022-11-23 15:07:03,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:07:03,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:03,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:07:03,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:07:03,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1546695410, now seen corresponding path program 1 times [2022-11-23 15:07:03,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:03,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805521130] [2022-11-23 15:07:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:03,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:07:03,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805521130] [2022-11-23 15:07:03,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805521130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:03,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:03,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:07:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118925748] [2022-11-23 15:07:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:03,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:07:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:07:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:07:03,190 INFO L87 Difference]: Start difference. First operand 4382 states and 7111 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:04,042 INFO L93 Difference]: Finished difference Result 13053 states and 21820 transitions. [2022-11-23 15:07:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:07:04,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2022-11-23 15:07:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:04,095 INFO L225 Difference]: With dead ends: 13053 [2022-11-23 15:07:04,095 INFO L226 Difference]: Without dead ends: 8676 [2022-11-23 15:07:04,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:07:04,127 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 483 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:04,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 744 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:07:04,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8676 states. [2022-11-23 15:07:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8676 to 8644. [2022-11-23 15:07:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8644 states, 7457 states have (on average 1.5187072549282554) internal successors, (11325), 7364 states have internal predecessors, (11325), 858 states have call successors, (858), 296 states have call predecessors, (858), 328 states have return successors, (1738), 984 states have call predecessors, (1738), 858 states have call successors, (1738) [2022-11-23 15:07:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8644 states to 8644 states and 13921 transitions. [2022-11-23 15:07:04,833 INFO L78 Accepts]: Start accepts. Automaton has 8644 states and 13921 transitions. Word has length 73 [2022-11-23 15:07:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:04,833 INFO L495 AbstractCegarLoop]: Abstraction has 8644 states and 13921 transitions. [2022-11-23 15:07:04,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 8644 states and 13921 transitions. [2022-11-23 15:07:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:07:04,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:04,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:07:04,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:07:04,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:04,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1315437167, now seen corresponding path program 1 times [2022-11-23 15:07:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:04,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265157341] [2022-11-23 15:07:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:04,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:07:05,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:05,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265157341] [2022-11-23 15:07:05,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265157341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:05,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:05,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:07:05,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431802871] [2022-11-23 15:07:05,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:05,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:07:05,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:05,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:07:05,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:07:05,028 INFO L87 Difference]: Start difference. First operand 8644 states and 13921 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:07,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:07,117 INFO L93 Difference]: Finished difference Result 31731 states and 53021 transitions. [2022-11-23 15:07:07,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:07:07,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2022-11-23 15:07:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:07,355 INFO L225 Difference]: With dead ends: 31731 [2022-11-23 15:07:07,356 INFO L226 Difference]: Without dead ends: 23092 [2022-11-23 15:07:07,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:07:07,405 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 1108 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:07,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1220 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 15:07:07,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23092 states. [2022-11-23 15:07:08,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23092 to 21824. [2022-11-23 15:07:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21824 states, 19065 states have (on average 1.529976396538159) internal successors, (29169), 18612 states have internal predecessors, (29169), 1918 states have call successors, (1918), 696 states have call predecessors, (1918), 840 states have return successors, (4950), 2516 states have call predecessors, (4950), 1918 states have call successors, (4950) [2022-11-23 15:07:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21824 states to 21824 states and 36037 transitions. [2022-11-23 15:07:08,927 INFO L78 Accepts]: Start accepts. Automaton has 21824 states and 36037 transitions. Word has length 73 [2022-11-23 15:07:08,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:08,927 INFO L495 AbstractCegarLoop]: Abstraction has 21824 states and 36037 transitions. [2022-11-23 15:07:08,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:08,929 INFO L276 IsEmpty]: Start isEmpty. Operand 21824 states and 36037 transitions. [2022-11-23 15:07:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:07:08,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:08,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:07:08,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:07:08,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:08,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash 824015728, now seen corresponding path program 1 times [2022-11-23 15:07:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:08,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067321344] [2022-11-23 15:07:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:08,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:07:09,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:09,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067321344] [2022-11-23 15:07:09,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067321344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:09,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:09,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:07:09,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555683231] [2022-11-23 15:07:09,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:09,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:07:09,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:09,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:07:09,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:07:09,099 INFO L87 Difference]: Start difference. First operand 21824 states and 36037 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:12,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:12,530 INFO L93 Difference]: Finished difference Result 78571 states and 135821 transitions. [2022-11-23 15:07:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:07:12,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2022-11-23 15:07:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:12,892 INFO L225 Difference]: With dead ends: 78571 [2022-11-23 15:07:12,892 INFO L226 Difference]: Without dead ends: 56752 [2022-11-23 15:07:12,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:07:12,983 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1103 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:12,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1207 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 15:07:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56752 states. [2022-11-23 15:07:16,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56752 to 54052. [2022-11-23 15:07:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54052 states, 47601 states have (on average 1.543265897775257) internal successors, (73461), 46028 states have internal predecessors, (73461), 4298 states have call successors, (4298), 1640 states have call predecessors, (4298), 2152 states have return successors, (13986), 6384 states have call predecessors, (13986), 4298 states have call successors, (13986) [2022-11-23 15:07:16,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54052 states to 54052 states and 91745 transitions. [2022-11-23 15:07:16,820 INFO L78 Accepts]: Start accepts. Automaton has 54052 states and 91745 transitions. Word has length 73 [2022-11-23 15:07:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:16,821 INFO L495 AbstractCegarLoop]: Abstraction has 54052 states and 91745 transitions. [2022-11-23 15:07:16,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:16,822 INFO L276 IsEmpty]: Start isEmpty. Operand 54052 states and 91745 transitions. [2022-11-23 15:07:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:07:16,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:16,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:07:16,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:07:16,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:16,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash -940800881, now seen corresponding path program 1 times [2022-11-23 15:07:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:16,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614636221] [2022-11-23 15:07:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:16,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:07:17,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:17,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614636221] [2022-11-23 15:07:17,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614636221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:17,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:17,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:07:17,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83735009] [2022-11-23 15:07:17,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:17,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:07:17,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:07:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:07:17,010 INFO L87 Difference]: Start difference. First operand 54052 states and 91745 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:07:24,698 INFO L93 Difference]: Finished difference Result 195177 states and 351170 transitions. [2022-11-23 15:07:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:07:24,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2022-11-23 15:07:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:07:25,798 INFO L225 Difference]: With dead ends: 195177 [2022-11-23 15:07:25,798 INFO L226 Difference]: Without dead ends: 141130 [2022-11-23 15:07:26,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:07:26,031 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1101 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:07:26,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1208 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 15:07:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141130 states. [2022-11-23 15:07:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141130 to 134828. [2022-11-23 15:07:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134828 states, 119193 states have (on average 1.5529854941145873) internal successors, (185105), 113668 states have internal predecessors, (185105), 9994 states have call successors, (9994), 3960 states have call predecessors, (9994), 5640 states have return successors, (40894), 17200 states have call predecessors, (40894), 9994 states have call successors, (40894) [2022-11-23 15:07:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134828 states to 134828 states and 235993 transitions. [2022-11-23 15:07:35,655 INFO L78 Accepts]: Start accepts. Automaton has 134828 states and 235993 transitions. Word has length 73 [2022-11-23 15:07:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:07:35,656 INFO L495 AbstractCegarLoop]: Abstraction has 134828 states and 235993 transitions. [2022-11-23 15:07:35,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 15:07:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 134828 states and 235993 transitions. [2022-11-23 15:07:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 15:07:35,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:07:35,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:07:35,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:07:35,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:07:35,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:07:35,662 INFO L85 PathProgramCache]: Analyzing trace with hash 606133631, now seen corresponding path program 1 times [2022-11-23 15:07:35,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:07:35,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610833610] [2022-11-23 15:07:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:07:35,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:07:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:07:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:07:36,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:07:36,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610833610] [2022-11-23 15:07:36,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610833610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:07:36,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:07:36,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:07:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105057501] [2022-11-23 15:07:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:07:36,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:07:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:07:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:07:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:07:36,050 INFO L87 Difference]: Start difference. First operand 134828 states and 235993 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)