./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS --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 45519c8273c53879cf6a170ed74d5bc0be814b1f3243ce6c30d1d3efe9a3cf32 --- 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-8393723 [2022-11-19 07:45:01,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:45:01,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:45:01,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:45:01,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:45:01,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:45:01,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:45:01,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:45:01,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:45:01,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:45:01,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:45:01,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:45:01,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:45:01,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:45:01,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:45:01,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:45:01,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:45:01,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:45:01,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:45:01,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:45:01,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:45:01,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:45:01,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:45:01,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:45:01,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:45:01,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:45:01,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:45:01,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:45:01,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:45:01,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:45:01,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:45:01,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:45:01,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:45:01,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:45:01,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:45:01,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:45:01,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:45:01,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:45:01,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:45:01,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:45:01,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:45:01,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:45:01,478 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:45:01,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:45:01,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:45:01,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:45:01,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:45:01,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:45:01,480 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:45:01,480 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:45:01,480 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:45:01,481 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:45:01,482 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:45:01,482 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:45:01,482 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:45:01,482 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:45:01,483 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:45:01,483 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:45:01,483 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:45:01,483 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:45:01,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:45:01,484 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:45:01,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:45:01,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:45:01,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:45:01,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:45:01,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:45:01,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:45:01,486 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:45:01,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:45:01,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:45:01,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:45:01,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:45:01,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:45:01,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:45:01,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:45:01,487 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:45:01,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:45:01,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:45:01,488 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:45:01,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:45:01,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:45:01,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:45:01,489 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_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45519c8273c53879cf6a170ed74d5bc0be814b1f3243ce6c30d1d3efe9a3cf32 [2022-11-19 07:45:01,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:45:01,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:45:01,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:45:01,877 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:45:01,878 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:45:01,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/systemc/transmitter.16.cil.c [2022-11-19 07:45:01,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/data/e0f081837/971f965bd46d437ab00ca51acbadaa18/FLAG17a3861bf [2022-11-19 07:45:02,582 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:45:02,582 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/sv-benchmarks/c/systemc/transmitter.16.cil.c [2022-11-19 07:45:02,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/data/e0f081837/971f965bd46d437ab00ca51acbadaa18/FLAG17a3861bf [2022-11-19 07:45:02,856 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/data/e0f081837/971f965bd46d437ab00ca51acbadaa18 [2022-11-19 07:45:02,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:45:02,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:45:02,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:45:02,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:45:02,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:45:02,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:02" (1/1) ... [2022-11-19 07:45:02,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5214c281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:02, skipping insertion in model container [2022-11-19 07:45:02,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:02" (1/1) ... [2022-11-19 07:45:02,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:45:02,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:45:03,141 WARN L234 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_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/sv-benchmarks/c/systemc/transmitter.16.cil.c[706,719] [2022-11-19 07:45:03,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:45:03,294 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:45:03,316 WARN L234 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_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/sv-benchmarks/c/systemc/transmitter.16.cil.c[706,719] [2022-11-19 07:45:03,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:45:03,454 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:45:03,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03 WrapperNode [2022-11-19 07:45:03,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:45:03,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:45:03,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:45:03,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:45:03,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,540 INFO L138 Inliner]: procedures = 56, calls = 71, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 945 [2022-11-19 07:45:03,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:45:03,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:45:03,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:45:03,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:45:03,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:45:03,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:45:03,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:45:03,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:45:03,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (1/1) ... [2022-11-19 07:45:03,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:45:03,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:45:03,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:45:03,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bab3f51-9ccc-41f4-8b94-162e0ef26d0a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:45:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:45:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-19 07:45:03,712 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-19 07:45:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-19 07:45:03,712 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-19 07:45:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-19 07:45:03,712 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-19 07:45:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-19 07:45:03,713 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-19 07:45:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-19 07:45:03,713 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-19 07:45:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-19 07:45:03,713 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-19 07:45:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:45:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:45:03,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:45:03,866 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:45:03,884 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:45:05,200 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:45:05,909 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:45:05,910 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-19 07:45:05,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:05 BoogieIcfgContainer [2022-11-19 07:45:05,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:45:05,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:45:05,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:45:05,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:45:05,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:02" (1/3) ... [2022-11-19 07:45:05,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339b392c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:05, skipping insertion in model container [2022-11-19 07:45:05,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:03" (2/3) ... [2022-11-19 07:45:05,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339b392c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:05, skipping insertion in model container [2022-11-19 07:45:05,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:05" (3/3) ... [2022-11-19 07:45:05,925 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.16.cil.c [2022-11-19 07:45:05,946 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:45:05,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:45:06,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:45:06,032 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;@46ff2f40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:45:06,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:45:06,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 163 states have (on average 1.5521472392638036) internal successors, (253), 165 states have internal predecessors, (253), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-19 07:45:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:45:06,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:06,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:06,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:06,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:06,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1439967137, now seen corresponding path program 1 times [2022-11-19 07:45:06,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:06,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227421043] [2022-11-19 07:45:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:06,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:45:06,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:06,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227421043] [2022-11-19 07:45:06,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227421043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:06,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:06,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:45:06,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414137457] [2022-11-19 07:45:06,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:06,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:45:06,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:45:06,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:45:06,830 INFO L87 Difference]: Start difference. First operand has 197 states, 163 states have (on average 1.5521472392638036) internal successors, (253), 165 states have internal predecessors, (253), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:07,660 INFO L93 Difference]: Finished difference Result 578 states and 911 transitions. [2022-11-19 07:45:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:45:07,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2022-11-19 07:45:07,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:07,690 INFO L225 Difference]: With dead ends: 578 [2022-11-19 07:45:07,690 INFO L226 Difference]: Without dead ends: 382 [2022-11-19 07:45:07,702 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 [2022-11-19 07:45:07,707 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 533 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:07,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 850 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:45:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-19 07:45:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 378. [2022-11-19 07:45:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 317 states have (on average 1.5173501577287065) internal successors, (481), 319 states have internal predecessors, (481), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-19 07:45:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 577 transitions. [2022-11-19 07:45:07,847 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 577 transitions. Word has length 70 [2022-11-19 07:45:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:07,849 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 577 transitions. [2022-11-19 07:45:07,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 577 transitions. [2022-11-19 07:45:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:45:07,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:07,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:07,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:45:07,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash -466517056, now seen corresponding path program 1 times [2022-11-19 07:45:07,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:07,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229394140] [2022-11-19 07:45:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:45:08,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:08,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229394140] [2022-11-19 07:45:08,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229394140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:08,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:08,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:08,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427184558] [2022-11-19 07:45:08,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:08,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:08,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:08,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:08,286 INFO L87 Difference]: Start difference. First operand 378 states and 577 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:09,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:09,596 INFO L93 Difference]: Finished difference Result 2209 states and 3569 transitions. [2022-11-19 07:45:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:45:09,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2022-11-19 07:45:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:09,612 INFO L225 Difference]: With dead ends: 2209 [2022-11-19 07:45:09,613 INFO L226 Difference]: Without dead ends: 1836 [2022-11-19 07:45:09,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:45:09,617 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1393 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:09,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 1179 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:45:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2022-11-19 07:45:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1798. [2022-11-19 07:45:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1525 states have (on average 1.5140983606557377) internal successors, (2309), 1533 states have internal predecessors, (2309), 212 states have call successors, (212), 60 states have call predecessors, (212), 60 states have return successors, (334), 205 states have call predecessors, (334), 212 states have call successors, (334) [2022-11-19 07:45:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2855 transitions. [2022-11-19 07:45:09,770 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2855 transitions. Word has length 70 [2022-11-19 07:45:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:09,771 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2855 transitions. [2022-11-19 07:45:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2855 transitions. [2022-11-19 07:45:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:45:09,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:09,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:09,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:45:09,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:09,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:09,773 INFO L85 PathProgramCache]: Analyzing trace with hash -363715809, now seen corresponding path program 1 times [2022-11-19 07:45:09,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:09,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315035852] [2022-11-19 07:45:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:09,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:45:09,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:09,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315035852] [2022-11-19 07:45:09,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315035852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:09,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:09,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:09,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231624886] [2022-11-19 07:45:09,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:09,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:09,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:09,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:09,975 INFO L87 Difference]: Start difference. First operand 1798 states and 2855 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:11,187 INFO L93 Difference]: Finished difference Result 7117 states and 11663 transitions. [2022-11-19 07:45:11,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:45:11,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2022-11-19 07:45:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:11,229 INFO L225 Difference]: With dead ends: 7117 [2022-11-19 07:45:11,229 INFO L226 Difference]: Without dead ends: 5324 [2022-11-19 07:45:11,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:45:11,247 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1400 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:11,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 1186 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:45:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5324 states. [2022-11-19 07:45:11,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5324 to 5012. [2022-11-19 07:45:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 4361 states have (on average 1.5228158679202017) internal successors, (6641), 4295 states have internal predecessors, (6641), 486 states have call successors, (486), 148 states have call predecessors, (486), 164 states have return successors, (1016), 569 states have call predecessors, (1016), 486 states have call successors, (1016) [2022-11-19 07:45:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 8143 transitions. [2022-11-19 07:45:11,635 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 8143 transitions. Word has length 70 [2022-11-19 07:45:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:11,635 INFO L495 AbstractCegarLoop]: Abstraction has 5012 states and 8143 transitions. [2022-11-19 07:45:11,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 8143 transitions. [2022-11-19 07:45:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:45:11,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:11,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:11,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:45:11,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1830410272, now seen corresponding path program 1 times [2022-11-19 07:45:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:11,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168667250] [2022-11-19 07:45:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:11,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:45:11,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:11,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168667250] [2022-11-19 07:45:11,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168667250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:11,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:11,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:11,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808407952] [2022-11-19 07:45:11,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:11,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:11,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:11,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:11,868 INFO L87 Difference]: Start difference. First operand 5012 states and 8143 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:13,558 INFO L93 Difference]: Finished difference Result 18573 states and 31325 transitions. [2022-11-19 07:45:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:45:13,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2022-11-19 07:45:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:13,661 INFO L225 Difference]: With dead ends: 18573 [2022-11-19 07:45:13,662 INFO L226 Difference]: Without dead ends: 13566 [2022-11-19 07:45:13,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:45:13,701 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 1364 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:13,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 1225 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:45:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13566 states. [2022-11-19 07:45:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13566 to 12864. [2022-11-19 07:45:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12864 states, 11367 states have (on average 1.5308348728776282) internal successors, (17401), 11051 states have internal predecessors, (17401), 1076 states have call successors, (1076), 348 states have call predecessors, (1076), 420 states have return successors, (2912), 1465 states have call predecessors, (2912), 1076 states have call successors, (2912) [2022-11-19 07:45:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12864 states to 12864 states and 21389 transitions. [2022-11-19 07:45:14,748 INFO L78 Accepts]: Start accepts. Automaton has 12864 states and 21389 transitions. Word has length 70 [2022-11-19 07:45:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:14,749 INFO L495 AbstractCegarLoop]: Abstraction has 12864 states and 21389 transitions. [2022-11-19 07:45:14,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 12864 states and 21389 transitions. [2022-11-19 07:45:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:45:14,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:14,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:14,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:45:14,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:14,752 INFO L85 PathProgramCache]: Analyzing trace with hash 956932577, now seen corresponding path program 1 times [2022-11-19 07:45:14,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:14,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663132563] [2022-11-19 07:45:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:14,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:45:14,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:14,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663132563] [2022-11-19 07:45:14,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663132563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:14,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:14,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376157632] [2022-11-19 07:45:14,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:14,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:14,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:14,937 INFO L87 Difference]: Start difference. First operand 12864 states and 21389 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:17,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:17,818 INFO L93 Difference]: Finished difference Result 46885 states and 81599 transitions. [2022-11-19 07:45:17,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:45:17,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2022-11-19 07:45:17,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:18,058 INFO L225 Difference]: With dead ends: 46885 [2022-11-19 07:45:18,058 INFO L226 Difference]: Without dead ends: 34026 [2022-11-19 07:45:18,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:45:18,131 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1341 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:18,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 1252 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:45:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34026 states. [2022-11-19 07:45:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34026 to 32540. [2022-11-19 07:45:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32540 states, 29077 states have (on average 1.539945661519414) internal successors, (44777), 27971 states have internal predecessors, (44777), 2386 states have call successors, (2386), 820 states have call predecessors, (2386), 1076 states have return successors, (8280), 3749 states have call predecessors, (8280), 2386 states have call successors, (8280) [2022-11-19 07:45:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32540 states to 32540 states and 55443 transitions. [2022-11-19 07:45:21,067 INFO L78 Accepts]: Start accepts. Automaton has 32540 states and 55443 transitions. Word has length 70 [2022-11-19 07:45:21,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:21,068 INFO L495 AbstractCegarLoop]: Abstraction has 32540 states and 55443 transitions. [2022-11-19 07:45:21,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 32540 states and 55443 transitions. [2022-11-19 07:45:21,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:45:21,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:21,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:21,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:45:21,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:21,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash 4194, now seen corresponding path program 1 times [2022-11-19 07:45:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:21,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267409354] [2022-11-19 07:45:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:21,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:45:21,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:21,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267409354] [2022-11-19 07:45:21,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267409354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:21,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:21,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:21,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458127024] [2022-11-19 07:45:21,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:21,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:21,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:21,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:21,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:21,264 INFO L87 Difference]: Start difference. First operand 32540 states and 55443 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:26,350 INFO L93 Difference]: Finished difference Result 118557 states and 213161 transitions. [2022-11-19 07:45:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:45:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2022-11-19 07:45:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:27,433 INFO L225 Difference]: With dead ends: 118557 [2022-11-19 07:45:27,433 INFO L226 Difference]: Without dead ends: 86022 [2022-11-19 07:45:27,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:45:27,615 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1318 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:27,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 1279 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:45:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86022 states. [2022-11-19 07:45:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86022 to 82948. [2022-11-19 07:45:33,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82948 states, 74719 states have (on average 1.5505694669361207) internal successors, (115857), 71227 states have internal predecessors, (115857), 5408 states have call successors, (5408), 1980 states have call predecessors, (5408), 2820 states have return successors, (23664), 9741 states have call predecessors, (23664), 5408 states have call successors, (23664) [2022-11-19 07:45:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82948 states to 82948 states and 144929 transitions. [2022-11-19 07:45:33,968 INFO L78 Accepts]: Start accepts. Automaton has 82948 states and 144929 transitions. Word has length 70 [2022-11-19 07:45:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:33,969 INFO L495 AbstractCegarLoop]: Abstraction has 82948 states and 144929 transitions. [2022-11-19 07:45:33,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 82948 states and 144929 transitions. [2022-11-19 07:45:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:45:33,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:33,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:33,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:45:33,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:33,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1576553565, now seen corresponding path program 1 times [2022-11-19 07:45:33,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:33,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492146691] [2022-11-19 07:45:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:33,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:45:34,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:34,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492146691] [2022-11-19 07:45:34,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492146691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:34,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:34,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:34,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246431852] [2022-11-19 07:45:34,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:34,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:34,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:34,176 INFO L87 Difference]: Start difference. First operand 82948 states and 144929 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:45:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:45,883 INFO L93 Difference]: Finished difference Result 303477 states and 563595 transitions. [2022-11-19 07:45:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:45:45,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2022-11-19 07:45:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:47,966 INFO L225 Difference]: With dead ends: 303477 [2022-11-19 07:45:47,966 INFO L226 Difference]: Without dead ends: 220534 [2022-11-19 07:45:48,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:45:48,264 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1295 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:48,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1306 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-19 07:45:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220534 states.