./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/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_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.10.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/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_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/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 c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 --- 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 14:05:20,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:05:20,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:05:20,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:05:20,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:05:20,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:05:20,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:05:20,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:05:20,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:05:20,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:05:20,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:05:20,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:05:20,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:05:20,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:05:20,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:05:20,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:05:20,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:05:20,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:05:20,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:05:20,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:05:20,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:05:20,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:05:20,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:05:20,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:05:20,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:05:20,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:05:20,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:05:20,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:05:20,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:05:20,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:05:20,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:05:20,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:05:20,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:05:20,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:05:20,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:05:20,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:05:20,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:05:20,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:05:20,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:05:20,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:05:20,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:05:20,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:05:20,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:05:20,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:05:20,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:05:20,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:05:20,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:05:20,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:05:20,392 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:05:20,392 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:05:20,392 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:05:20,392 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:05:20,393 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:05:20,394 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:05:20,394 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:05:20,394 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:05:20,395 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:05:20,395 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:05:20,395 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:05:20,395 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:05:20,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:05:20,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:05:20,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:05:20,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:05:20,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:05:20,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:05:20,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:05:20,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:05:20,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:05:20,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:05:20,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:05:20,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:05:20,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:05:20,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:05:20,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:05:20,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:05:20,401 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:05:20,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:05:20,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:05:20,402 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:05:20,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:05:20,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:05:20,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:05:20,403 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_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2022-11-23 14:05:20,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:05:20,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:05:20,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:05:20,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:05:20,763 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:05:20,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-11-23 14:05:23,792 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:05:24,032 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:05:24,059 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-11-23 14:05:24,081 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/data/b89bc665c/dbf66b645b084509a190bca26523170f/FLAGa96e5593f [2022-11-23 14:05:24,100 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/data/b89bc665c/dbf66b645b084509a190bca26523170f [2022-11-23 14:05:24,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:05:24,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:05:24,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:05:24,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:05:24,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:05:24,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e17d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24, skipping insertion in model container [2022-11-23 14:05:24,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:05:24,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:05:24,330 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_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-11-23 14:05:24,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:05:24,494 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:05:24,504 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_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/sv-benchmarks/c/systemc/transmitter.10.cil.c[706,719] [2022-11-23 14:05:24,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:05:24,592 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:05:24,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24 WrapperNode [2022-11-23 14:05:24,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:05:24,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:05:24,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:05:24,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:05:24,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,686 INFO L138 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 720 [2022-11-23 14:05:24,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:05:24,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:05:24,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:05:24,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:05:24,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:05:24,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:05:24,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:05:24,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:05:24,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (1/1) ... [2022-11-23 14:05:24,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:05:24,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:05:24,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:05:24,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68cb639c-5cbc-4b8f-8500-dc3920ce47cf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:05:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:05:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-23 14:05:24,894 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-23 14:05:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-23 14:05:24,895 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-23 14:05:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 14:05:24,895 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 14:05:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-23 14:05:24,895 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-23 14:05:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-23 14:05:24,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-23 14:05:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:05:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-23 14:05:24,896 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-23 14:05:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:05:24,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:05:25,073 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:05:25,083 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:05:26,066 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:05:26,548 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:05:26,548 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-23 14:05:26,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:26 BoogieIcfgContainer [2022-11-23 14:05:26,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:05:26,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:05:26,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:05:26,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:05:26,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:05:24" (1/3) ... [2022-11-23 14:05:26,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7141f029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:05:26, skipping insertion in model container [2022-11-23 14:05:26,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:24" (2/3) ... [2022-11-23 14:05:26,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7141f029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:05:26, skipping insertion in model container [2022-11-23 14:05:26,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:26" (3/3) ... [2022-11-23 14:05:26,573 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2022-11-23 14:05:26,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:05:26,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:05:26,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:05:26,679 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;@6f18573e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:05:26,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:05:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 133 states have (on average 1.556390977443609) internal successors, (207), 135 states have internal predecessors, (207), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-23 14:05:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 14:05:26,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:26,705 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] [2022-11-23 14:05:26,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash 128064639, now seen corresponding path program 1 times [2022-11-23 14:05:26,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:26,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574203779] [2022-11-23 14:05:26,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:26,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:27,269 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 14:05:27,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:27,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574203779] [2022-11-23 14:05:27,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574203779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:27,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:27,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:05:27,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119494494] [2022-11-23 14:05:27,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:27,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:05:27,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:05:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:27,323 INFO L87 Difference]: Start difference. First operand has 164 states, 133 states have (on average 1.556390977443609) internal successors, (207), 135 states have internal predecessors, (207), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:05:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:27,920 INFO L93 Difference]: Finished difference Result 475 states and 757 transitions. [2022-11-23 14:05:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:05:27,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 69 [2022-11-23 14:05:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:27,943 INFO L225 Difference]: With dead ends: 475 [2022-11-23 14:05:27,943 INFO L226 Difference]: Without dead ends: 312 [2022-11-23 14:05:27,951 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 14:05:27,954 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 433 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:27,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 686 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:05:27,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-23 14:05:28,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 309. [2022-11-23 14:05:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 255 states have (on average 1.5058823529411764) internal successors, (384), 256 states have internal predecessors, (384), 41 states have call successors, (41), 12 states have call predecessors, (41), 12 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-23 14:05:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 466 transitions. [2022-11-23 14:05:28,029 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 466 transitions. Word has length 69 [2022-11-23 14:05:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:28,030 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 466 transitions. [2022-11-23 14:05:28,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:05:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 466 transitions. [2022-11-23 14:05:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 14:05:28,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:28,033 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] [2022-11-23 14:05:28,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:05:28,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:28,035 INFO L85 PathProgramCache]: Analyzing trace with hash -903266176, now seen corresponding path program 1 times [2022-11-23 14:05:28,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:28,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581306429] [2022-11-23 14:05:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:28,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:28,214 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 14:05:28,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:28,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581306429] [2022-11-23 14:05:28,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581306429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:28,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:28,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:05:28,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165882725] [2022-11-23 14:05:28,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:28,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:05:28,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:28,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:05:28,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:05:28,218 INFO L87 Difference]: Start difference. First operand 309 states and 466 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:05:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:29,002 INFO L93 Difference]: Finished difference Result 1056 states and 1611 transitions. [2022-11-23 14:05:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:05:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 69 [2022-11-23 14:05:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:29,014 INFO L225 Difference]: With dead ends: 1056 [2022-11-23 14:05:29,015 INFO L226 Difference]: Without dead ends: 728 [2022-11-23 14:05:29,022 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 14:05:29,025 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 908 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:29,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1095 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:05:29,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-23 14:05:29,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 716. [2022-11-23 14:05:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 607 states have (on average 1.4975288303130148) internal successors, (909), 599 states have internal predecessors, (909), 80 states have call successors, (80), 26 states have call predecessors, (80), 28 states have return successors, (91), 91 states have call predecessors, (91), 80 states have call successors, (91) [2022-11-23 14:05:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1080 transitions. [2022-11-23 14:05:29,128 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1080 transitions. Word has length 69 [2022-11-23 14:05:29,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:29,131 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1080 transitions. [2022-11-23 14:05:29,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:05:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1080 transitions. [2022-11-23 14:05:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 14:05:29,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:29,142 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] [2022-11-23 14:05:29,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:05:29,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:29,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1177044671, now seen corresponding path program 1 times [2022-11-23 14:05:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:29,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611619084] [2022-11-23 14:05:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:29,390 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 14:05:29,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:29,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611619084] [2022-11-23 14:05:29,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611619084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:29,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:29,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:05:29,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537139716] [2022-11-23 14:05:29,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:05:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:05:29,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:05:29,394 INFO L87 Difference]: Start difference. First operand 716 states and 1080 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:05:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:30,071 INFO L93 Difference]: Finished difference Result 2507 states and 3833 transitions. [2022-11-23 14:05:30,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:05:30,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 69 [2022-11-23 14:05:30,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:30,086 INFO L225 Difference]: With dead ends: 2507 [2022-11-23 14:05:30,086 INFO L226 Difference]: Without dead ends: 1751 [2022-11-23 14:05:30,092 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 14:05:30,097 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 908 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:30,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 902 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:05:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-11-23 14:05:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1363. [2022-11-23 14:05:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1158 states have (on average 1.498272884283247) internal successors, (1735), 1151 states have internal predecessors, (1735), 148 states have call successors, (148), 50 states have call predecessors, (148), 56 states have return successors, (180), 162 states have call predecessors, (180), 148 states have call successors, (180) [2022-11-23 14:05:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2063 transitions. [2022-11-23 14:05:30,220 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2063 transitions. Word has length 69 [2022-11-23 14:05:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:30,220 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 2063 transitions. [2022-11-23 14:05:30,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:05:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2063 transitions. [2022-11-23 14:05:30,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 14:05:30,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:30,224 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] [2022-11-23 14:05:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:05:30,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1387585568, now seen corresponding path program 1 times [2022-11-23 14:05:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:30,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356389507] [2022-11-23 14:05:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:30,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:30,429 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 14:05:30,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:30,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356389507] [2022-11-23 14:05:30,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356389507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:30,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:30,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:05:30,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458581313] [2022-11-23 14:05:30,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:30,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:05:30,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:30,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:05:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:30,431 INFO L87 Difference]: Start difference. First operand 1363 states and 2063 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:05:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:30,935 INFO L93 Difference]: Finished difference Result 4050 states and 6235 transitions. [2022-11-23 14:05:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:05:30,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 69 [2022-11-23 14:05:30,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:30,952 INFO L225 Difference]: With dead ends: 4050 [2022-11-23 14:05:30,953 INFO L226 Difference]: Without dead ends: 2692 [2022-11-23 14:05:30,959 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 14:05:30,960 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 448 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:30,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 684 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:05:30,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-11-23 14:05:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2680. [2022-11-23 14:05:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2283 states have (on average 1.4883924660534384) internal successors, (3398), 2269 states have internal predecessors, (3398), 284 states have call successors, (284), 100 states have call predecessors, (284), 112 states have return successors, (345), 311 states have call predecessors, (345), 284 states have call successors, (345) [2022-11-23 14:05:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 4027 transitions. [2022-11-23 14:05:31,160 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 4027 transitions. Word has length 69 [2022-11-23 14:05:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:31,160 INFO L495 AbstractCegarLoop]: Abstraction has 2680 states and 4027 transitions. [2022-11-23 14:05:31,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:05:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 4027 transitions. [2022-11-23 14:05:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 14:05:31,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:31,162 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] [2022-11-23 14:05:31,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:05:31,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:31,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash 112482879, now seen corresponding path program 1 times [2022-11-23 14:05:31,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:31,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311257521] [2022-11-23 14:05:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:31,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:31,254 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 14:05:31,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:31,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311257521] [2022-11-23 14:05:31,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311257521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:31,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:31,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:05:31,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936374447] [2022-11-23 14:05:31,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:31,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:05:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:31,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:05:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:05:31,257 INFO L87 Difference]: Start difference. First operand 2680 states and 4027 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:05:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:31,948 INFO L93 Difference]: Finished difference Result 7973 states and 12179 transitions. [2022-11-23 14:05:31,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:05:31,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 69 [2022-11-23 14:05:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:31,982 INFO L225 Difference]: With dead ends: 7973 [2022-11-23 14:05:31,982 INFO L226 Difference]: Without dead ends: 5298 [2022-11-23 14:05:31,993 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 14:05:31,996 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 454 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:31,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 684 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:05:32,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2022-11-23 14:05:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 5276. [2022-11-23 14:05:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5276 states, 4503 states have (on average 1.4779036198090163) internal successors, (6655), 4476 states have internal predecessors, (6655), 548 states have call successors, (548), 200 states have call predecessors, (548), 224 states have return successors, (664), 600 states have call predecessors, (664), 548 states have call successors, (664) [2022-11-23 14:05:32,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 7867 transitions. [2022-11-23 14:05:32,333 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 7867 transitions. Word has length 69 [2022-11-23 14:05:32,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:32,334 INFO L495 AbstractCegarLoop]: Abstraction has 5276 states and 7867 transitions. [2022-11-23 14:05:32,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:05:32,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 7867 transitions. [2022-11-23 14:05:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 14:05:32,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:32,336 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] [2022-11-23 14:05:32,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:05:32,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:32,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash 635803550, now seen corresponding path program 1 times [2022-11-23 14:05:32,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:32,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479839495] [2022-11-23 14:05:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:32,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:32,460 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 14:05:32,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:32,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479839495] [2022-11-23 14:05:32,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479839495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:32,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:32,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:05:32,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094176702] [2022-11-23 14:05:32,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:32,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:05:32,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:32,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:05:32,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:05:32,464 INFO L87 Difference]: Start difference. First operand 5276 states and 7867 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:05:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:33,757 INFO L93 Difference]: Finished difference Result 17809 states and 27018 transitions. [2022-11-23 14:05:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:05:33,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 69 [2022-11-23 14:05:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:33,820 INFO L225 Difference]: With dead ends: 17809 [2022-11-23 14:05:33,820 INFO L226 Difference]: Without dead ends: 12210 [2022-11-23 14:05:33,842 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 14:05:33,843 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 908 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:33,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 902 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:05:33,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12210 states. [2022-11-23 14:05:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12210 to 10144. [2022-11-23 14:05:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10144 states, 8651 states have (on average 1.4753207721650676) internal successors, (12763), 8640 states have internal predecessors, (12763), 1044 states have call successors, (1044), 392 states have call predecessors, (1044), 448 states have return successors, (1304), 1112 states have call predecessors, (1304), 1044 states have call successors, (1304) [2022-11-23 14:05:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10144 states to 10144 states and 15111 transitions. [2022-11-23 14:05:34,668 INFO L78 Accepts]: Start accepts. Automaton has 10144 states and 15111 transitions. Word has length 69 [2022-11-23 14:05:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:34,668 INFO L495 AbstractCegarLoop]: Abstraction has 10144 states and 15111 transitions. [2022-11-23 14:05:34,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 14:05:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 10144 states and 15111 transitions. [2022-11-23 14:05:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 14:05:34,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:34,672 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] [2022-11-23 14:05:34,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:05:34,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:34,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:34,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1554778173, now seen corresponding path program 1 times [2022-11-23 14:05:34,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:34,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866268810] [2022-11-23 14:05:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:34,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:34,997 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 14:05:34,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:34,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866268810] [2022-11-23 14:05:34,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866268810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:34,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:34,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:05:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042626864] [2022-11-23 14:05:35,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:35,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:05:35,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:05:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:05:35,001 INFO L87 Difference]: Start difference. First operand 10144 states and 15111 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-11-23 14:05:36,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:36,853 INFO L93 Difference]: Finished difference Result 31616 states and 47145 transitions. [2022-11-23 14:05:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:05:36,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) Word has length 69 [2022-11-23 14:05:36,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:36,965 INFO L225 Difference]: With dead ends: 31616 [2022-11-23 14:05:36,966 INFO L226 Difference]: Without dead ends: 21478 [2022-11-23 14:05:36,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:05:37,000 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 931 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:37,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 611 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:05:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21478 states. [2022-11-23 14:05:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21478 to 17148. [2022-11-23 14:05:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17148 states, 14791 states have (on average 1.4616320735582449) internal successors, (21619), 14768 states have internal predecessors, (21619), 1588 states have call successors, (1588), 656 states have call predecessors, (1588), 768 states have return successors, (2108), 1724 states have call predecessors, (2108), 1588 states have call successors, (2108) [2022-11-23 14:05:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17148 states to 17148 states and 25315 transitions. [2022-11-23 14:05:38,481 INFO L78 Accepts]: Start accepts. Automaton has 17148 states and 25315 transitions. Word has length 69 [2022-11-23 14:05:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:38,482 INFO L495 AbstractCegarLoop]: Abstraction has 17148 states and 25315 transitions. [2022-11-23 14:05:38,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2022-11-23 14:05:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 17148 states and 25315 transitions. [2022-11-23 14:05:38,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 14:05:38,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:38,484 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] [2022-11-23 14:05:38,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:05:38,485 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:38,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:38,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1973817297, now seen corresponding path program 1 times [2022-11-23 14:05:38,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:38,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455304563] [2022-11-23 14:05:38,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:38,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:38,859 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 14:05:38,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:38,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455304563] [2022-11-23 14:05:38,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455304563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:38,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:38,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:05:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145912034] [2022-11-23 14:05:38,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:38,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:05:38,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:05:38,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:05:38,863 INFO L87 Difference]: Start difference. First operand 17148 states and 25315 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-11-23 14:05:42,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:42,389 INFO L93 Difference]: Finished difference Result 63632 states and 94046 transitions. [2022-11-23 14:05:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:05:42,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) Word has length 70 [2022-11-23 14:05:42,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:42,648 INFO L225 Difference]: With dead ends: 63632 [2022-11-23 14:05:42,648 INFO L226 Difference]: Without dead ends: 46490 [2022-11-23 14:05:42,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:05:42,718 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 912 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:42,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 682 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:05:42,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46490 states. [2022-11-23 14:05:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46490 to 33672. [2022-11-23 14:05:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33672 states, 29059 states have (on average 1.4559000653842182) internal successors, (42307), 29020 states have internal predecessors, (42307), 3076 states have call successors, (3076), 1312 states have call predecessors, (3076), 1536 states have return successors, (4060), 3340 states have call predecessors, (4060), 3076 states have call successors, (4060) [2022-11-23 14:05:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33672 states to 33672 states and 49443 transitions. [2022-11-23 14:05:46,538 INFO L78 Accepts]: Start accepts. Automaton has 33672 states and 49443 transitions. Word has length 70 [2022-11-23 14:05:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:46,538 INFO L495 AbstractCegarLoop]: Abstraction has 33672 states and 49443 transitions. [2022-11-23 14:05:46,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-11-23 14:05:46,539 INFO L276 IsEmpty]: Start isEmpty. Operand 33672 states and 49443 transitions. [2022-11-23 14:05:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 14:05:46,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:46,542 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] [2022-11-23 14:05:46,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:05:46,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:46,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:46,544 INFO L85 PathProgramCache]: Analyzing trace with hash 996325652, now seen corresponding path program 1 times [2022-11-23 14:05:46,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:46,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782546068] [2022-11-23 14:05:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:46,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:46,844 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 14:05:46,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:46,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782546068] [2022-11-23 14:05:46,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782546068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:46,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:46,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:05:46,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681658469] [2022-11-23 14:05:46,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:46,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:05:46,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:05:46,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:05:46,848 INFO L87 Difference]: Start difference. First operand 33672 states and 49443 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2022-11-23 14:05:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:05:51,383 INFO L93 Difference]: Finished difference Result 96636 states and 142253 transitions. [2022-11-23 14:05:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:05:51,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) Word has length 71 [2022-11-23 14:05:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:05:51,704 INFO L225 Difference]: With dead ends: 96636 [2022-11-23 14:05:51,704 INFO L226 Difference]: Without dead ends: 62970 [2022-11-23 14:05:51,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:05:51,804 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 837 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:05:51,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 640 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:05:51,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62970 states. [2022-11-23 14:05:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62970 to 50072. [2022-11-23 14:05:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50072 states, 43171 states have (on average 1.4510435245882654) internal successors, (62643), 43044 states have internal predecessors, (62643), 4596 states have call successors, (4596), 1984 states have call predecessors, (4596), 2304 states have return successors, (5972), 5044 states have call predecessors, (5972), 4596 states have call successors, (5972) [2022-11-23 14:05:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50072 states to 50072 states and 73211 transitions. [2022-11-23 14:05:56,145 INFO L78 Accepts]: Start accepts. Automaton has 50072 states and 73211 transitions. Word has length 71 [2022-11-23 14:05:56,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:05:56,146 INFO L495 AbstractCegarLoop]: Abstraction has 50072 states and 73211 transitions. [2022-11-23 14:05:56,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2022-11-23 14:05:56,146 INFO L276 IsEmpty]: Start isEmpty. Operand 50072 states and 73211 transitions. [2022-11-23 14:05:56,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 14:05:56,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:05:56,149 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] [2022-11-23 14:05:56,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:05:56,150 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:05:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:05:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash -447451731, now seen corresponding path program 1 times [2022-11-23 14:05:56,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:05:56,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097854646] [2022-11-23 14:05:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:05:56,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:05:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:05:56,471 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 14:05:56,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:05:56,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097854646] [2022-11-23 14:05:56,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097854646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:05:56,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:05:56,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:05:56,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882922611] [2022-11-23 14:05:56,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:05:56,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:05:56,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:05:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:05:56,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:05:56,475 INFO L87 Difference]: Start difference. First operand 50072 states and 73211 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-11-23 14:06:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:04,554 INFO L93 Difference]: Finished difference Result 141300 states and 207293 transitions. [2022-11-23 14:06:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:06:04,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) Word has length 72 [2022-11-23 14:06:04,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:05,003 INFO L225 Difference]: With dead ends: 141300 [2022-11-23 14:06:05,003 INFO L226 Difference]: Without dead ends: 91234 [2022-11-23 14:06:05,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:06:05,157 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 772 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:05,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 773 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:06:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91234 states. [2022-11-23 14:06:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91234 to 74624. [2022-11-23 14:06:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74624 states, 64283 states have (on average 1.4461521708694367) internal successors, (92963), 63980 states have internal predecessors, (92963), 6884 states have call successors, (6884), 3008 states have call predecessors, (6884), 3456 states have return successors, (8772), 7636 states have call predecessors, (8772), 6884 states have call successors, (8772) [2022-11-23 14:06:12,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74624 states to 74624 states and 108619 transitions. [2022-11-23 14:06:12,375 INFO L78 Accepts]: Start accepts. Automaton has 74624 states and 108619 transitions. Word has length 72 [2022-11-23 14:06:12,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:12,377 INFO L495 AbstractCegarLoop]: Abstraction has 74624 states and 108619 transitions. [2022-11-23 14:06:12,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-11-23 14:06:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand 74624 states and 108619 transitions. [2022-11-23 14:06:12,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 14:06:12,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:12,380 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 14:06:12,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:06:12,380 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:06:12,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:12,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1862629176, now seen corresponding path program 1 times [2022-11-23 14:06:12,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:12,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454451901] [2022-11-23 14:06:12,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:12,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:12,645 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 14:06:12,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:06:12,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454451901] [2022-11-23 14:06:12,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454451901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:12,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:12,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:06:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922079190] [2022-11-23 14:06:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:12,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:06:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:06:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:06:12,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:06:12,648 INFO L87 Difference]: Start difference. First operand 74624 states and 108619 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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)