./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI --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 ece5e10278ff4277201bc584c9d4f272bab8d3b56dec5e2dfa257f3717fce473 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:45:57,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:45:57,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:45:57,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:45:57,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:45:57,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:45:57,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:45:57,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:45:57,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:45:57,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:45:57,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:45:57,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:45:57,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:45:57,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:45:57,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:45:57,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:45:57,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:45:57,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:45:57,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:45:57,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:45:57,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:45:57,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:45:57,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:45:57,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:45:57,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:45:57,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:45:57,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:45:57,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:45:57,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:45:57,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:45:57,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:45:57,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:45:57,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:45:57,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:45:57,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:45:57,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:45:57,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:45:57,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:45:57,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:45:57,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:45:57,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:45:57,454 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:45:57,496 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:45:57,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:45:57,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:45:57,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:45:57,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:45:57,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:45:57,498 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:45:57,499 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:45:57,499 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:45:57,499 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:45:57,500 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:45:57,500 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:45:57,500 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:45:57,501 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:45:57,501 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:45:57,501 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:45:57,501 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:45:57,501 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:45:57,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:45:57,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:45:57,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:45:57,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:45:57,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:45:57,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:45:57,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:45:57,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:45:57,503 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:45:57,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:45:57,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:45:57,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:45:57,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:45:57,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:45:57,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:45:57,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:45:57,505 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:45:57,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:45:57,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:45:57,506 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:45:57,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:45:57,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:45:57,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:45:57,506 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_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ece5e10278ff4277201bc584c9d4f272bab8d3b56dec5e2dfa257f3717fce473 [2022-11-03 03:45:57,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:45:57,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:45:57,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:45:57,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:45:57,827 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:45:57,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-2.c [2022-11-03 03:45:57,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/data/4600697b3/a5f4cb219f7944328c02a0f2bb8cc640/FLAG0ba98ebcd [2022-11-03 03:45:58,945 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:45:58,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-2.c [2022-11-03 03:45:58,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/data/4600697b3/a5f4cb219f7944328c02a0f2bb8cc640/FLAG0ba98ebcd [2022-11-03 03:45:59,224 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/data/4600697b3/a5f4cb219f7944328c02a0f2bb8cc640 [2022-11-03 03:45:59,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:45:59,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:45:59,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:45:59,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:45:59,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:45:59,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:59" (1/1) ... [2022-11-03 03:45:59,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de73ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:45:59, skipping insertion in model container [2022-11-03 03:45:59,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:45:59" (1/1) ... [2022-11-03 03:45:59,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:45:59,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:46:01,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-2.c[381679,381692] [2022-11-03 03:46:01,942 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-2.c[383339,383352] [2022-11-03 03:46:02,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:46:02,223 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:46:03,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-2.c[381679,381692] [2022-11-03 03:46:03,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-2.c[383339,383352] [2022-11-03 03:46:03,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:46:03,493 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:46:03,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03 WrapperNode [2022-11-03 03:46:03,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:46:03,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:46:03,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:46:03,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:46:03,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:03,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:03,983 INFO L138 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2022-11-03 03:46:03,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:46:03,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:46:03,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:46:03,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:46:03,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:03,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:04,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:04,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:04,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:04,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:04,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:04,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:04,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:46:04,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:46:04,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:46:04,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:46:04,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (1/1) ... [2022-11-03 03:46:04,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:46:04,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:04,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:46:04,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:46:04,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-03 03:46:04,667 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-03 03:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-03 03:46:04,667 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-03 03:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-03 03:46:04,667 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-03 03:46:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-03 03:46:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-03 03:46:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-03 03:46:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-03 03:46:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-03 03:46:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-03 03:46:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-03 03:46:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-03 03:46:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:46:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:46:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:46:04,853 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:46:04,864 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:46:13,927 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:46:16,495 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:46:16,496 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-03 03:46:16,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:46:16 BoogieIcfgContainer [2022-11-03 03:46:16,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:46:16,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:46:16,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:46:16,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:46:16,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:45:59" (1/3) ... [2022-11-03 03:46:16,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2f59bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:46:16, skipping insertion in model container [2022-11-03 03:46:16,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:46:03" (2/3) ... [2022-11-03 03:46:16,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2f59bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:46:16, skipping insertion in model container [2022-11-03 03:46:16,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:46:16" (3/3) ... [2022-11-03 03:46:16,512 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.07.cil-2.c [2022-11-03 03:46:16,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:46:16,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 03:46:16,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:46:16,638 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;@6222379e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:46:16,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 03:46:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 1782 states, 1749 states have (on average 1.9662664379645511) internal successors, (3439), 1754 states have internal predecessors, (3439), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-03 03:46:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 03:46:16,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:16,664 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] [2022-11-03 03:46:16,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:16,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:16,670 INFO L85 PathProgramCache]: Analyzing trace with hash 193661949, now seen corresponding path program 1 times [2022-11-03 03:46:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:16,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010443607] [2022-11-03 03:46:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:46:17,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:17,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010443607] [2022-11-03 03:46:17,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010443607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:17,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:17,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:46:17,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234653635] [2022-11-03 03:46:17,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:17,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:46:17,194 INFO L87 Difference]: Start difference. First operand has 1782 states, 1749 states have (on average 1.9662664379645511) internal successors, (3439), 1754 states have internal predecessors, (3439), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:46:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:18,328 INFO L93 Difference]: Finished difference Result 3679 states and 7167 transitions. [2022-11-03 03:46:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:46:18,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-11-03 03:46:18,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:18,352 INFO L225 Difference]: With dead ends: 3679 [2022-11-03 03:46:18,352 INFO L226 Difference]: Without dead ends: 1896 [2022-11-03 03:46:18,360 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 [2022-11-03 03:46:18,363 INFO L413 NwaCegarLoop]: 3368 mSDtfsCounter, 3622 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3622 SdHoareTripleChecker+Valid, 6656 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:18,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3622 Valid, 6656 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 03:46:18,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-11-03 03:46:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1895. [2022-11-03 03:46:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1841 states have (on average 1.9369907658881043) internal successors, (3566), 1845 states have internal predecessors, (3566), 40 states have call successors, (40), 13 states have call predecessors, (40), 12 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-03 03:46:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 3644 transitions. [2022-11-03 03:46:18,525 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 3644 transitions. Word has length 53 [2022-11-03 03:46:18,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:18,527 INFO L495 AbstractCegarLoop]: Abstraction has 1895 states and 3644 transitions. [2022-11-03 03:46:18,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 03:46:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 3644 transitions. [2022-11-03 03:46:18,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:46:18,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:18,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:18,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:46:18,545 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:18,546 INFO L85 PathProgramCache]: Analyzing trace with hash -884054711, now seen corresponding path program 1 times [2022-11-03 03:46:18,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:18,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603541626] [2022-11-03 03:46:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:46:18,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603541626] [2022-11-03 03:46:18,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603541626] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:18,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076713978] [2022-11-03 03:46:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:18,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:18,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:18,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:18,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:46:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:19,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:46:19,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:46:19,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:19,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076713978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:19,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:19,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:46:19,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484937210] [2022-11-03 03:46:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:19,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:19,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:19,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:19,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:19,248 INFO L87 Difference]: Start difference. First operand 1895 states and 3644 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:19,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:19,840 INFO L93 Difference]: Finished difference Result 2386 states and 4389 transitions. [2022-11-03 03:46:19,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:19,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2022-11-03 03:46:19,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:19,853 INFO L225 Difference]: With dead ends: 2386 [2022-11-03 03:46:19,853 INFO L226 Difference]: Without dead ends: 2137 [2022-11-03 03:46:19,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:19,857 INFO L413 NwaCegarLoop]: 3272 mSDtfsCounter, 3437 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3437 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:19,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3437 Valid, 3429 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:46:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2022-11-03 03:46:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2131. [2022-11-03 03:46:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2131 states, 2033 states have (on average 1.8932611903590753) internal successors, (3849), 2038 states have internal predecessors, (3849), 72 states have call successors, (72), 25 states have call predecessors, (72), 24 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-03 03:46:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 3991 transitions. [2022-11-03 03:46:19,950 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 3991 transitions. Word has length 102 [2022-11-03 03:46:19,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:19,950 INFO L495 AbstractCegarLoop]: Abstraction has 2131 states and 3991 transitions. [2022-11-03 03:46:19,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 3991 transitions. [2022-11-03 03:46:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:46:19,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:19,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:19,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:20,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 03:46:20,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:20,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1861380167, now seen corresponding path program 1 times [2022-11-03 03:46:20,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:20,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679927681] [2022-11-03 03:46:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:20,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:46:20,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:20,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679927681] [2022-11-03 03:46:20,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679927681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:20,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789937749] [2022-11-03 03:46:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:20,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:20,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:20,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:20,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:46:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:20,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:46:20,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 03:46:20,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:20,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789937749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:20,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:20,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:46:20,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139969634] [2022-11-03 03:46:20,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:20,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:20,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:20,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:20,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:20,688 INFO L87 Difference]: Start difference. First operand 2131 states and 3991 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:21,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:21,249 INFO L93 Difference]: Finished difference Result 3088 states and 5438 transitions. [2022-11-03 03:46:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:21,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2022-11-03 03:46:21,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:21,263 INFO L225 Difference]: With dead ends: 3088 [2022-11-03 03:46:21,263 INFO L226 Difference]: Without dead ends: 2603 [2022-11-03 03:46:21,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:21,267 INFO L413 NwaCegarLoop]: 3260 mSDtfsCounter, 3446 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3446 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:21,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3446 Valid, 3417 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:46:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2022-11-03 03:46:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2595. [2022-11-03 03:46:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2595 states, 2411 states have (on average 1.8262131895479055) internal successors, (4403), 2418 states have internal predecessors, (4403), 134 states have call successors, (134), 49 states have call predecessors, (134), 48 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2022-11-03 03:46:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2595 states to 2595 states and 4669 transitions. [2022-11-03 03:46:21,392 INFO L78 Accepts]: Start accepts. Automaton has 2595 states and 4669 transitions. Word has length 102 [2022-11-03 03:46:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:21,393 INFO L495 AbstractCegarLoop]: Abstraction has 2595 states and 4669 transitions. [2022-11-03 03:46:21,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:21,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2595 states and 4669 transitions. [2022-11-03 03:46:21,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:46:21,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:21,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:21,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:21,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:21,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:21,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:21,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1752243447, now seen corresponding path program 1 times [2022-11-03 03:46:21,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:21,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250948433] [2022-11-03 03:46:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:46:21,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:21,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250948433] [2022-11-03 03:46:21,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250948433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:21,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352659060] [2022-11-03 03:46:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:21,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:21,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:21,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:21,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:46:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:22,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:46:22,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 03:46:22,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:22,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352659060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:22,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:22,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:46:22,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960444953] [2022-11-03 03:46:22,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:22,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:22,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:22,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:22,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:22,068 INFO L87 Difference]: Start difference. First operand 2595 states and 4669 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:22,668 INFO L93 Difference]: Finished difference Result 4468 states and 7486 transitions. [2022-11-03 03:46:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:22,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2022-11-03 03:46:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:22,687 INFO L225 Difference]: With dead ends: 4468 [2022-11-03 03:46:22,687 INFO L226 Difference]: Without dead ends: 3519 [2022-11-03 03:46:22,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:22,694 INFO L413 NwaCegarLoop]: 3270 mSDtfsCounter, 3443 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3443 SdHoareTripleChecker+Valid, 3427 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:22,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3443 Valid, 3427 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:46:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2022-11-03 03:46:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 3507. [2022-11-03 03:46:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3155 states have (on average 1.7391442155309034) internal successors, (5487), 3166 states have internal predecessors, (5487), 254 states have call successors, (254), 97 states have call predecessors, (254), 96 states have return successors, (252), 244 states have call predecessors, (252), 252 states have call successors, (252) [2022-11-03 03:46:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 5993 transitions. [2022-11-03 03:46:22,839 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 5993 transitions. Word has length 102 [2022-11-03 03:46:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:22,840 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 5993 transitions. [2022-11-03 03:46:22,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 5993 transitions. [2022-11-03 03:46:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:46:22,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:22,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:22,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:23,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:23,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:23,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:23,059 INFO L85 PathProgramCache]: Analyzing trace with hash 957886343, now seen corresponding path program 1 times [2022-11-03 03:46:23,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:23,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181812049] [2022-11-03 03:46:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:23,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:46:23,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:23,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181812049] [2022-11-03 03:46:23,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181812049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:23,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857167335] [2022-11-03 03:46:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:23,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:23,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:23,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:23,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:46:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:23,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:46:23,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:46:23,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:23,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857167335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:23,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:23,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-03 03:46:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692337937] [2022-11-03 03:46:23,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:23,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:23,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:23,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:23,463 INFO L87 Difference]: Start difference. First operand 3507 states and 5993 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:24,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:24,174 INFO L93 Difference]: Finished difference Result 7180 states and 11482 transitions. [2022-11-03 03:46:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:24,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2022-11-03 03:46:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:24,200 INFO L225 Difference]: With dead ends: 7180 [2022-11-03 03:46:24,200 INFO L226 Difference]: Without dead ends: 5319 [2022-11-03 03:46:24,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:46:24,212 INFO L413 NwaCegarLoop]: 3237 mSDtfsCounter, 3431 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3431 SdHoareTripleChecker+Valid, 3394 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:24,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3431 Valid, 3394 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:46:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2022-11-03 03:46:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 5299. [2022-11-03 03:46:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 4619 states have (on average 1.6468932669408962) internal successors, (7607), 4638 states have internal predecessors, (7607), 486 states have call successors, (486), 193 states have call predecessors, (486), 192 states have return successors, (484), 468 states have call predecessors, (484), 484 states have call successors, (484) [2022-11-03 03:46:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 8577 transitions. [2022-11-03 03:46:24,431 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 8577 transitions. Word has length 102 [2022-11-03 03:46:24,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:24,432 INFO L495 AbstractCegarLoop]: Abstraction has 5299 states and 8577 transitions. [2022-11-03 03:46:24,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:46:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 8577 transitions. [2022-11-03 03:46:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:46:24,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:24,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:24,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:24,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:24,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1556203781, now seen corresponding path program 1 times [2022-11-03 03:46:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:24,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289118748] [2022-11-03 03:46:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 03:46:24,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:24,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289118748] [2022-11-03 03:46:24,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289118748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:24,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:24,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:24,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635063257] [2022-11-03 03:46:24,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:24,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:24,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:24,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:24,767 INFO L87 Difference]: Start difference. First operand 5299 states and 8577 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:46:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:25,519 INFO L93 Difference]: Finished difference Result 8151 states and 12868 transitions. [2022-11-03 03:46:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:25,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2022-11-03 03:46:25,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:25,555 INFO L225 Difference]: With dead ends: 8151 [2022-11-03 03:46:25,555 INFO L226 Difference]: Without dead ends: 6259 [2022-11-03 03:46:25,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:25,565 INFO L413 NwaCegarLoop]: 3307 mSDtfsCounter, 82 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:25,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 6536 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:46:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2022-11-03 03:46:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 5939. [2022-11-03 03:46:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5939 states, 5227 states have (on average 1.6542950066960016) internal successors, (8647), 5246 states have internal predecessors, (8647), 502 states have call successors, (502), 209 states have call predecessors, (502), 208 states have return successors, (500), 484 states have call predecessors, (500), 500 states have call successors, (500) [2022-11-03 03:46:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 9649 transitions. [2022-11-03 03:46:25,865 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 9649 transitions. Word has length 102 [2022-11-03 03:46:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:25,866 INFO L495 AbstractCegarLoop]: Abstraction has 5939 states and 9649 transitions. [2022-11-03 03:46:25,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:46:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 9649 transitions. [2022-11-03 03:46:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 03:46:25,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:25,882 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:25,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:46:25,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:25,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1856769528, now seen corresponding path program 1 times [2022-11-03 03:46:25,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:25,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708150207] [2022-11-03 03:46:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 03:46:25,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:25,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708150207] [2022-11-03 03:46:25,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708150207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:25,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:25,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:25,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122588792] [2022-11-03 03:46:25,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:25,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:25,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:25,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:25,986 INFO L87 Difference]: Start difference. First operand 5939 states and 9649 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:46:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:26,730 INFO L93 Difference]: Finished difference Result 14380 states and 22394 transitions. [2022-11-03 03:46:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:26,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 137 [2022-11-03 03:46:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:26,775 INFO L225 Difference]: With dead ends: 14380 [2022-11-03 03:46:26,775 INFO L226 Difference]: Without dead ends: 10087 [2022-11-03 03:46:26,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:26,791 INFO L413 NwaCegarLoop]: 3239 mSDtfsCounter, 3435 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3435 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:26,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3435 Valid, 3396 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:46:26,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10087 states. [2022-11-03 03:46:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10087 to 10035. [2022-11-03 03:46:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10035 states, 8651 states have (on average 1.5839787307825686) internal successors, (13703), 8686 states have internal predecessors, (13703), 966 states have call successors, (966), 417 states have call predecessors, (966), 416 states have return successors, (964), 932 states have call predecessors, (964), 964 states have call successors, (964) [2022-11-03 03:46:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10035 states to 10035 states and 15633 transitions. [2022-11-03 03:46:27,347 INFO L78 Accepts]: Start accepts. Automaton has 10035 states and 15633 transitions. Word has length 137 [2022-11-03 03:46:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:27,348 INFO L495 AbstractCegarLoop]: Abstraction has 10035 states and 15633 transitions. [2022-11-03 03:46:27,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:46:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 10035 states and 15633 transitions. [2022-11-03 03:46:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 03:46:27,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:27,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:27,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:46:27,373 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1815938781, now seen corresponding path program 1 times [2022-11-03 03:46:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:27,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362877044] [2022-11-03 03:46:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 03:46:27,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362877044] [2022-11-03 03:46:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362877044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:27,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:27,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085823609] [2022-11-03 03:46:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:27,481 INFO L87 Difference]: Start difference. First operand 10035 states and 15633 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:46:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:28,599 INFO L93 Difference]: Finished difference Result 26524 states and 40314 transitions. [2022-11-03 03:46:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:28,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 137 [2022-11-03 03:46:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:28,701 INFO L225 Difference]: With dead ends: 26524 [2022-11-03 03:46:28,701 INFO L226 Difference]: Without dead ends: 18135 [2022-11-03 03:46:28,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:28,743 INFO L413 NwaCegarLoop]: 3239 mSDtfsCounter, 3437 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3437 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:28,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3437 Valid, 3396 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:46:28,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18135 states. [2022-11-03 03:46:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18135 to 18035. [2022-11-03 03:46:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18035 states, 15339 states have (on average 1.5317165395397354) internal successors, (23495), 15406 states have internal predecessors, (23495), 1862 states have call successors, (1862), 833 states have call predecessors, (1862), 832 states have return successors, (1860), 1796 states have call predecessors, (1860), 1860 states have call successors, (1860) [2022-11-03 03:46:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18035 states to 18035 states and 27217 transitions. [2022-11-03 03:46:29,851 INFO L78 Accepts]: Start accepts. Automaton has 18035 states and 27217 transitions. Word has length 137 [2022-11-03 03:46:29,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:29,852 INFO L495 AbstractCegarLoop]: Abstraction has 18035 states and 27217 transitions. [2022-11-03 03:46:29,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:46:29,853 INFO L276 IsEmpty]: Start isEmpty. Operand 18035 states and 27217 transitions. [2022-11-03 03:46:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 03:46:29,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:29,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:29,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:46:29,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1754244087, now seen corresponding path program 1 times [2022-11-03 03:46:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:29,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060929320] [2022-11-03 03:46:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 03:46:30,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:30,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060929320] [2022-11-03 03:46:30,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060929320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:30,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:46:30,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:46:30,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702331404] [2022-11-03 03:46:30,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:30,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:30,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:30,031 INFO L87 Difference]: Start difference. First operand 18035 states and 27217 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:46:32,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:32,424 INFO L93 Difference]: Finished difference Result 50236 states and 74970 transitions. [2022-11-03 03:46:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 137 [2022-11-03 03:46:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:32,616 INFO L225 Difference]: With dead ends: 50236 [2022-11-03 03:46:32,616 INFO L226 Difference]: Without dead ends: 33847 [2022-11-03 03:46:32,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:46:32,704 INFO L413 NwaCegarLoop]: 3260 mSDtfsCounter, 3440 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3440 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:32,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3440 Valid, 3417 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:46:32,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33847 states. [2022-11-03 03:46:34,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33847 to 33651. [2022-11-03 03:46:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33651 states, 28395 states have (on average 1.4945941186828666) internal successors, (42439), 28526 states have internal predecessors, (42439), 3590 states have call successors, (3590), 1665 states have call predecessors, (3590), 1664 states have return successors, (3588), 3460 states have call predecessors, (3588), 3588 states have call successors, (3588) [2022-11-03 03:46:34,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33651 states to 33651 states and 49617 transitions. [2022-11-03 03:46:34,835 INFO L78 Accepts]: Start accepts. Automaton has 33651 states and 49617 transitions. Word has length 137 [2022-11-03 03:46:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:34,836 INFO L495 AbstractCegarLoop]: Abstraction has 33651 states and 49617 transitions. [2022-11-03 03:46:34,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 03:46:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 33651 states and 49617 transitions. [2022-11-03 03:46:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:46:34,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:34,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:34,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:46:34,944 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1524936194, now seen corresponding path program 1 times [2022-11-03 03:46:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:34,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673315454] [2022-11-03 03:46:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:34,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-03 03:46:35,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:35,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673315454] [2022-11-03 03:46:35,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673315454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:35,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524987052] [2022-11-03 03:46:35,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:35,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:35,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:35,422 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:35,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:46:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:35,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:46:35,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-03 03:46:35,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:35,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524987052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:35,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:35,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:46:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820058182] [2022-11-03 03:46:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:35,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:35,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:35,747 INFO L87 Difference]: Start difference. First operand 33651 states and 49617 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:46:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:38,062 INFO L93 Difference]: Finished difference Result 50171 states and 74711 transitions. [2022-11-03 03:46:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:38,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 157 [2022-11-03 03:46:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:38,274 INFO L225 Difference]: With dead ends: 50171 [2022-11-03 03:46:38,274 INFO L226 Difference]: Without dead ends: 33783 [2022-11-03 03:46:38,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:38,335 INFO L413 NwaCegarLoop]: 3353 mSDtfsCounter, 164 mSDsluCounter, 3458 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 6568 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:38,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 6568 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:46:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33783 states. [2022-11-03 03:46:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33783 to 33523. [2022-11-03 03:46:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33523 states, 28267 states have (on average 1.4787207698022429) internal successors, (41799), 28398 states have internal predecessors, (41799), 3590 states have call successors, (3590), 1665 states have call predecessors, (3590), 1664 states have return successors, (3588), 3460 states have call predecessors, (3588), 3588 states have call successors, (3588) [2022-11-03 03:46:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33523 states to 33523 states and 48977 transitions. [2022-11-03 03:46:40,267 INFO L78 Accepts]: Start accepts. Automaton has 33523 states and 48977 transitions. Word has length 157 [2022-11-03 03:46:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:40,268 INFO L495 AbstractCegarLoop]: Abstraction has 33523 states and 48977 transitions. [2022-11-03 03:46:40,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-03 03:46:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 33523 states and 48977 transitions. [2022-11-03 03:46:40,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:46:40,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:40,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:40,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:40,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:40,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1021870656, now seen corresponding path program 1 times [2022-11-03 03:46:40,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:40,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387172959] [2022-11-03 03:46:40,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:40,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-03 03:46:41,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:41,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387172959] [2022-11-03 03:46:41,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387172959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:41,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281292245] [2022-11-03 03:46:41,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:41,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:41,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:41,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:41,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:46:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:41,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:46:41,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 03:46:41,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:41,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281292245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:41,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:41,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:46:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424774370] [2022-11-03 03:46:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:41,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:41,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:41,443 INFO L87 Difference]: Start difference. First operand 33523 states and 48977 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:46:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:43,910 INFO L93 Difference]: Finished difference Result 58161 states and 83086 transitions. [2022-11-03 03:46:43,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:46:43,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 157 [2022-11-03 03:46:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:44,085 INFO L225 Difference]: With dead ends: 58161 [2022-11-03 03:46:44,086 INFO L226 Difference]: Without dead ends: 41965 [2022-11-03 03:46:44,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:44,140 INFO L413 NwaCegarLoop]: 3246 mSDtfsCounter, 3443 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3443 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:44,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3443 Valid, 3290 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:46:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41965 states. [2022-11-03 03:46:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41965 to 41965. [2022-11-03 03:46:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41965 states, 35945 states have (on average 1.4227569898455974) internal successors, (51141), 36076 states have internal predecessors, (51141), 3844 states have call successors, (3844), 2175 states have call predecessors, (3844), 2174 states have return successors, (3842), 3714 states have call predecessors, (3842), 3842 states have call successors, (3842) [2022-11-03 03:46:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41965 states to 41965 states and 58827 transitions. [2022-11-03 03:46:46,275 INFO L78 Accepts]: Start accepts. Automaton has 41965 states and 58827 transitions. Word has length 157 [2022-11-03 03:46:46,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:46,275 INFO L495 AbstractCegarLoop]: Abstraction has 41965 states and 58827 transitions. [2022-11-03 03:46:46,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:46:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 41965 states and 58827 transitions. [2022-11-03 03:46:46,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 03:46:46,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:46,396 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:46,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:46,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 03:46:46,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash 488397173, now seen corresponding path program 1 times [2022-11-03 03:46:46,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:46,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049712875] [2022-11-03 03:46:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:46,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 10 proven. 48 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-03 03:46:47,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:47,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049712875] [2022-11-03 03:46:47,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049712875] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:47,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054449544] [2022-11-03 03:46:47,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:47,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:47,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:47,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:47,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:46:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:47,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:46:47,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:46:47,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:47,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054449544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:47,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:47,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-03 03:46:47,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134690071] [2022-11-03 03:46:47,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:46:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:46:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:46:47,510 INFO L87 Difference]: Start difference. First operand 41965 states and 58827 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:46:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:46:52,491 INFO L93 Difference]: Finished difference Result 124387 states and 172223 transitions. [2022-11-03 03:46:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:46:52,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 158 [2022-11-03 03:46:52,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:46:52,856 INFO L225 Difference]: With dead ends: 124387 [2022-11-03 03:46:52,856 INFO L226 Difference]: Without dead ends: 84069 [2022-11-03 03:46:52,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:46:52,977 INFO L413 NwaCegarLoop]: 3408 mSDtfsCounter, 3465 mSDsluCounter, 3835 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 6945 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:46:52,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 6945 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:46:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84069 states. [2022-11-03 03:46:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84069 to 83937. [2022-11-03 03:46:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83937 states, 71909 states have (on average 1.4000055625860464) internal successors, (100673), 72296 states have internal predecessors, (100673), 7552 states have call successors, (7552), 4347 states have call predecessors, (7552), 4474 states have return successors, (7934), 7294 states have call predecessors, (7934), 7550 states have call successors, (7934) [2022-11-03 03:46:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83937 states to 83937 states and 116159 transitions. [2022-11-03 03:46:58,068 INFO L78 Accepts]: Start accepts. Automaton has 83937 states and 116159 transitions. Word has length 158 [2022-11-03 03:46:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:46:58,069 INFO L495 AbstractCegarLoop]: Abstraction has 83937 states and 116159 transitions. [2022-11-03 03:46:58,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 03:46:58,070 INFO L276 IsEmpty]: Start isEmpty. Operand 83937 states and 116159 transitions. [2022-11-03 03:46:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 03:46:58,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:46:58,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:46:58,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:46:58,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 03:46:58,498 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:46:58,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:46:58,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1807106776, now seen corresponding path program 1 times [2022-11-03 03:46:58,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:46:58,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720592178] [2022-11-03 03:46:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:58,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:46:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 49 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-03 03:46:58,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:46:58,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720592178] [2022-11-03 03:46:58,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720592178] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:46:58,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101504518] [2022-11-03 03:46:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:46:58,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:46:58,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:46:58,946 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:46:58,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15a983b-eb49-46d7-b817-c5f27c9bf3bb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:46:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:46:59,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:46:59,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:46:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 03:46:59,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:46:59,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101504518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:46:59,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:46:59,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-03 03:46:59,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30143989] [2022-11-03 03:46:59,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:46:59,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:46:59,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:46:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:46:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:46:59,257 INFO L87 Difference]: Start difference. First operand 83937 states and 116159 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-03 03:47:05,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:05,209 INFO L93 Difference]: Finished difference Result 193485 states and 271012 transitions. [2022-11-03 03:47:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:05,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 158 [2022-11-03 03:47:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:05,937 INFO L225 Difference]: With dead ends: 193485 [2022-11-03 03:47:05,937 INFO L226 Difference]: Without dead ends: 111195 [2022-11-03 03:47:06,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:47:06,148 INFO L413 NwaCegarLoop]: 3249 mSDtfsCounter, 93 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 6463 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:06,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 6463 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:47:06,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111195 states.