./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.08.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.08.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba --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 d0fbb3eaba725aed5c3b8bf09c66f0f1daed4feeee0b9a3792dc033de334e501 --- 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-b5237d8 [2022-11-22 02:49:42,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:49:42,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:49:42,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:49:42,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:49:42,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:49:42,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:49:42,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:49:42,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:49:42,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:49:42,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:49:42,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:49:42,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:49:42,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:49:42,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:49:42,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:49:42,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:49:42,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:49:42,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:49:42,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:49:42,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:49:42,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:49:42,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:49:42,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:49:42,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:49:42,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:49:42,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:49:42,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:49:42,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:49:42,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:49:42,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:49:42,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:49:42,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:49:42,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:49:42,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:49:42,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:49:42,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:49:42,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:49:42,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:49:42,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:49:42,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:49:42,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:49:42,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:49:42,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:49:42,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:49:42,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:49:42,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:49:42,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:49:42,506 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:49:42,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:49:42,507 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:49:42,507 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:49:42,508 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:49:42,508 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:49:42,508 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:49:42,508 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:49:42,509 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:49:42,509 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:49:42,509 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:49:42,509 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:49:42,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:49:42,510 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:49:42,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:49:42,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:49:42,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:49:42,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:49:42,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:49:42,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:49:42,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:49:42,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:49:42,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:49:42,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:49:42,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:49:42,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:49:42,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:49:42,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:49:42,514 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:49:42,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:49:42,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:49:42,514 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:49:42,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:49:42,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:49:42,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:49:42,515 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_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0fbb3eaba725aed5c3b8bf09c66f0f1daed4feeee0b9a3792dc033de334e501 [2022-11-22 02:49:42,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:49:42,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:49:42,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:49:42,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:49:42,814 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:49:42,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/systemc/transmitter.08.cil.c [2022-11-22 02:49:45,907 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:49:46,185 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:49:46,185 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/sv-benchmarks/c/systemc/transmitter.08.cil.c [2022-11-22 02:49:46,197 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/data/9f1d1d398/ebce29ab79cb41b3a3aaa47dadd089b3/FLAG6a669fabb [2022-11-22 02:49:46,263 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/data/9f1d1d398/ebce29ab79cb41b3a3aaa47dadd089b3 [2022-11-22 02:49:46,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:49:46,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:49:46,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:49:46,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:49:46,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:49:46,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a2b6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46, skipping insertion in model container [2022-11-22 02:49:46,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:49:46,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:49:46,480 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/sv-benchmarks/c/systemc/transmitter.08.cil.c[706,719] [2022-11-22 02:49:46,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:49:46,619 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:49:46,630 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/sv-benchmarks/c/systemc/transmitter.08.cil.c[706,719] [2022-11-22 02:49:46,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:49:46,703 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:49:46,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46 WrapperNode [2022-11-22 02:49:46,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:49:46,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:49:46,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:49:46,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:49:46,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,788 INFO L138 Inliner]: procedures = 44, calls = 54, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 606 [2022-11-22 02:49:46,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:49:46,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:49:46,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:49:46,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:49:46,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,885 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:49:46,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:49:46,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:49:46,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:49:46,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (1/1) ... [2022-11-22 02:49:46,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:49:46,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:46,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:49:46,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_055fb11a-82af-4fd1-bec2-47f25d16227b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:49:47,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:49:47,003 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-22 02:49:47,004 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-22 02:49:47,004 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-22 02:49:47,004 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-22 02:49:47,004 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-22 02:49:47,004 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-22 02:49:47,004 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-22 02:49:47,005 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-22 02:49:47,005 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-22 02:49:47,005 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-22 02:49:47,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:49:47,005 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-22 02:49:47,005 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-22 02:49:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:49:47,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:49:47,158 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:49:47,160 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:49:47,980 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:49:48,330 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:49:48,331 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-22 02:49:48,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:49:48 BoogieIcfgContainer [2022-11-22 02:49:48,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:49:48,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:49:48,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:49:48,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:49:48,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:49:46" (1/3) ... [2022-11-22 02:49:48,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c8e443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:49:48, skipping insertion in model container [2022-11-22 02:49:48,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:46" (2/3) ... [2022-11-22 02:49:48,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c8e443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:49:48, skipping insertion in model container [2022-11-22 02:49:48,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:49:48" (3/3) ... [2022-11-22 02:49:48,342 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.08.cil.c [2022-11-22 02:49:48,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:49:48,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:49:48,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:49:48,463 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;@64becd83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:49:48,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:49:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 115 states have internal predecessors, (175), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-22 02:49:48,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 02:49:48,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:48,481 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] [2022-11-22 02:49:48,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:49:48,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:48,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1115745721, now seen corresponding path program 1 times [2022-11-22 02:49:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:48,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817915917] [2022-11-22 02:49:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:48,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:48,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817915917] [2022-11-22 02:49:48,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817915917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:48,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:48,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:49:48,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595728771] [2022-11-22 02:49:48,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:48,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:49:48,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:49,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:49:49,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:49:49,037 INFO L87 Difference]: Start difference. First operand has 142 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 115 states have internal predecessors, (175), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-11-22 02:49:49,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:49,563 INFO L93 Difference]: Finished difference Result 413 states and 642 transitions. [2022-11-22 02:49:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:49:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 61 [2022-11-22 02:49:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:49,578 INFO L225 Difference]: With dead ends: 413 [2022-11-22 02:49:49,578 INFO L226 Difference]: Without dead ends: 272 [2022-11-22 02:49:49,583 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 [2022-11-22 02:49:49,592 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 375 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:49,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 578 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:49:49,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-22 02:49:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 268. [2022-11-22 02:49:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 217 states have (on average 1.4976958525345623) internal successors, (325), 219 states have internal predecessors, (325), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-22 02:49:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 401 transitions. [2022-11-22 02:49:49,709 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 401 transitions. Word has length 61 [2022-11-22 02:49:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:49,709 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 401 transitions. [2022-11-22 02:49:49,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-11-22 02:49:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 401 transitions. [2022-11-22 02:49:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 02:49:49,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:49,723 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] [2022-11-22 02:49:49,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:49:49,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:49:49,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -985095494, now seen corresponding path program 1 times [2022-11-22 02:49:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:49,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19492326] [2022-11-22 02:49:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:50,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:50,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19492326] [2022-11-22 02:49:50,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19492326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:50,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:50,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:49:50,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264161479] [2022-11-22 02:49:50,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:50,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:50,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:50,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:50,025 INFO L87 Difference]: Start difference. First operand 268 states and 401 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-22 02:49:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:50,763 INFO L93 Difference]: Finished difference Result 1549 states and 2443 transitions. [2022-11-22 02:49:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:49:50,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2022-11-22 02:49:50,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:50,777 INFO L225 Difference]: With dead ends: 1549 [2022-11-22 02:49:50,778 INFO L226 Difference]: Without dead ends: 1286 [2022-11-22 02:49:50,782 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 [2022-11-22 02:49:50,783 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 941 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:50,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 809 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:49:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-11-22 02:49:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1250. [2022-11-22 02:49:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1027 states have (on average 1.49269717624148) internal successors, (1533), 1035 states have internal predecessors, (1533), 162 states have call successors, (162), 60 states have call predecessors, (162), 60 states have return successors, (244), 155 states have call predecessors, (244), 162 states have call successors, (244) [2022-11-22 02:49:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1939 transitions. [2022-11-22 02:49:50,947 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1939 transitions. Word has length 61 [2022-11-22 02:49:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:50,948 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1939 transitions. [2022-11-22 02:49:50,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-22 02:49:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1939 transitions. [2022-11-22 02:49:50,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 02:49:50,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:50,954 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] [2022-11-22 02:49:50,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:49:50,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:49:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:50,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1858573189, now seen corresponding path program 1 times [2022-11-22 02:49:50,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:50,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090883589] [2022-11-22 02:49:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:50,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:51,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:51,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090883589] [2022-11-22 02:49:51,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090883589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:51,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:51,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:49:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598023088] [2022-11-22 02:49:51,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:51,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:51,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:51,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:51,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:51,166 INFO L87 Difference]: Start difference. First operand 1250 states and 1939 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-22 02:49:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:52,074 INFO L93 Difference]: Finished difference Result 4923 states and 7865 transitions. [2022-11-22 02:49:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:49:52,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2022-11-22 02:49:52,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:52,107 INFO L225 Difference]: With dead ends: 4923 [2022-11-22 02:49:52,107 INFO L226 Difference]: Without dead ends: 3678 [2022-11-22 02:49:52,119 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 [2022-11-22 02:49:52,124 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 943 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:52,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 816 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:49:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3678 states. [2022-11-22 02:49:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3678 to 3416. [2022-11-22 02:49:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3416 states, 2875 states have (on average 1.5057391304347827) internal successors, (4329), 2849 states have internal predecessors, (4329), 376 states have call successors, (376), 148 states have call predecessors, (376), 164 states have return successors, (726), 419 states have call predecessors, (726), 376 states have call successors, (726) [2022-11-22 02:49:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 5431 transitions. [2022-11-22 02:49:52,432 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 5431 transitions. Word has length 61 [2022-11-22 02:49:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:52,433 INFO L495 AbstractCegarLoop]: Abstraction has 3416 states and 5431 transitions. [2022-11-22 02:49:52,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-22 02:49:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 5431 transitions. [2022-11-22 02:49:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 02:49:52,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:52,435 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] [2022-11-22 02:49:52,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:49:52,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:49:52,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:52,436 INFO L85 PathProgramCache]: Analyzing trace with hash 280879706, now seen corresponding path program 1 times [2022-11-22 02:49:52,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:52,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360836680] [2022-11-22 02:49:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:52,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:52,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:52,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360836680] [2022-11-22 02:49:52,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360836680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:52,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:52,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:49:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39243842] [2022-11-22 02:49:52,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:52,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:52,581 INFO L87 Difference]: Start difference. First operand 3416 states and 5431 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-22 02:49:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:53,783 INFO L93 Difference]: Finished difference Result 12583 states and 20719 transitions. [2022-11-22 02:49:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:49:53,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2022-11-22 02:49:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:53,879 INFO L225 Difference]: With dead ends: 12583 [2022-11-22 02:49:53,879 INFO L226 Difference]: Without dead ends: 9172 [2022-11-22 02:49:53,893 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 [2022-11-22 02:49:53,901 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 912 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:53,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 850 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:49:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9172 states. [2022-11-22 02:49:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9172 to 8584. [2022-11-22 02:49:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8584 states, 7317 states have (on average 1.5176985103184366) internal successors, (11105), 7181 states have internal predecessors, (11105), 846 states have call successors, (846), 348 states have call predecessors, (846), 420 states have return successors, (2042), 1055 states have call predecessors, (2042), 846 states have call successors, (2042) [2022-11-22 02:49:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8584 states to 8584 states and 13993 transitions. [2022-11-22 02:49:54,628 INFO L78 Accepts]: Start accepts. Automaton has 8584 states and 13993 transitions. Word has length 61 [2022-11-22 02:49:54,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:54,629 INFO L495 AbstractCegarLoop]: Abstraction has 8584 states and 13993 transitions. [2022-11-22 02:49:54,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-22 02:49:54,629 INFO L276 IsEmpty]: Start isEmpty. Operand 8584 states and 13993 transitions. [2022-11-22 02:49:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 02:49:54,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:54,631 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] [2022-11-22 02:49:54,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:49:54,631 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:49:54,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1483936903, now seen corresponding path program 1 times [2022-11-22 02:49:54,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:54,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768225214] [2022-11-22 02:49:54,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:54,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:54,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:54,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768225214] [2022-11-22 02:49:54,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768225214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:54,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:54,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:49:54,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377212342] [2022-11-22 02:49:54,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:54,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:54,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:54,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:54,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:54,776 INFO L87 Difference]: Start difference. First operand 8584 states and 13993 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-22 02:49:56,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:56,724 INFO L93 Difference]: Finished difference Result 30951 states and 52709 transitions. [2022-11-22 02:49:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:49:56,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2022-11-22 02:49:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:56,880 INFO L225 Difference]: With dead ends: 30951 [2022-11-22 02:49:56,880 INFO L226 Difference]: Without dead ends: 22372 [2022-11-22 02:49:56,977 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 [2022-11-22 02:49:56,978 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 889 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:56,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 877 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:49:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22372 states. [2022-11-22 02:49:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22372 to 21128. [2022-11-22 02:49:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21128 states, 18135 states have (on average 1.5316790736145576) internal successors, (27777), 17669 states have internal predecessors, (27777), 1916 states have call successors, (1916), 820 states have call predecessors, (1916), 1076 states have return successors, (5710), 2639 states have call predecessors, (5710), 1916 states have call successors, (5710) [2022-11-22 02:49:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21128 states to 21128 states and 35403 transitions. [2022-11-22 02:49:58,808 INFO L78 Accepts]: Start accepts. Automaton has 21128 states and 35403 transitions. Word has length 61 [2022-11-22 02:49:58,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:58,809 INFO L495 AbstractCegarLoop]: Abstraction has 21128 states and 35403 transitions. [2022-11-22 02:49:58,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-22 02:49:58,811 INFO L276 IsEmpty]: Start isEmpty. Operand 21128 states and 35403 transitions. [2022-11-22 02:49:58,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 02:49:58,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:58,812 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] [2022-11-22 02:49:58,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:49:58,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:49:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1541081128, now seen corresponding path program 1 times [2022-11-22 02:49:58,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:58,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597615011] [2022-11-22 02:49:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:58,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:59,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:59,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597615011] [2022-11-22 02:49:59,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597615011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:59,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:59,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:49:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649822016] [2022-11-22 02:49:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:59,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:49:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:59,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:49:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:49:59,081 INFO L87 Difference]: Start difference. First operand 21128 states and 35403 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:50:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:02,126 INFO L93 Difference]: Finished difference Result 60276 states and 101252 transitions. [2022-11-22 02:50:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:50:02,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 61 [2022-11-22 02:50:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:02,320 INFO L225 Difference]: With dead ends: 60276 [2022-11-22 02:50:02,320 INFO L226 Difference]: Without dead ends: 39154 [2022-11-22 02:50:02,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:50:02,380 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 776 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:02,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 511 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:50:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39154 states. [2022-11-22 02:50:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39154 to 34038. [2022-11-22 02:50:04,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34038 states, 29329 states have (on average 1.5137236182617886) internal successors, (44396), 28702 states have internal predecessors, (44396), 2872 states have call successors, (2872), 1324 states have call predecessors, (2872), 1836 states have return successors, (8563), 4012 states have call predecessors, (8563), 2872 states have call successors, (8563) [2022-11-22 02:50:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34038 states to 34038 states and 55831 transitions. [2022-11-22 02:50:05,391 INFO L78 Accepts]: Start accepts. Automaton has 34038 states and 55831 transitions. Word has length 61 [2022-11-22 02:50:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:05,394 INFO L495 AbstractCegarLoop]: Abstraction has 34038 states and 55831 transitions. [2022-11-22 02:50:05,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:50:05,394 INFO L276 IsEmpty]: Start isEmpty. Operand 34038 states and 55831 transitions. [2022-11-22 02:50:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 02:50:05,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:05,397 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] [2022-11-22 02:50:05,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:50:05,398 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:50:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:05,399 INFO L85 PathProgramCache]: Analyzing trace with hash 479655206, now seen corresponding path program 1 times [2022-11-22 02:50:05,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:05,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772292022] [2022-11-22 02:50:05,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:05,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:05,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:05,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772292022] [2022-11-22 02:50:05,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772292022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:05,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:05,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:50:05,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43015911] [2022-11-22 02:50:05,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:05,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:50:05,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:50:05,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:50:05,699 INFO L87 Difference]: Start difference. First operand 34038 states and 55831 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:50:10,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:10,497 INFO L93 Difference]: Finished difference Result 107960 states and 176708 transitions. [2022-11-22 02:50:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:50:10,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2022-11-22 02:50:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:10,822 INFO L225 Difference]: With dead ends: 107960 [2022-11-22 02:50:10,822 INFO L226 Difference]: Without dead ends: 73928 [2022-11-22 02:50:10,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:50:10,913 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 700 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:10,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 524 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:50:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73928 states. [2022-11-22 02:50:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73928 to 62078. [2022-11-22 02:50:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62078 states, 53625 states have (on average 1.5112913752913752) internal successors, (81043), 52318 states have internal predecessors, (81043), 5068 states have call successors, (5068), 2348 states have call predecessors, (5068), 3384 states have return successors, (16046), 7412 states have call predecessors, (16046), 5068 states have call successors, (16046) [2022-11-22 02:50:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62078 states to 62078 states and 102157 transitions. [2022-11-22 02:50:15,424 INFO L78 Accepts]: Start accepts. Automaton has 62078 states and 102157 transitions. Word has length 62 [2022-11-22 02:50:15,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:15,424 INFO L495 AbstractCegarLoop]: Abstraction has 62078 states and 102157 transitions. [2022-11-22 02:50:15,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:50:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 62078 states and 102157 transitions. [2022-11-22 02:50:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:50:15,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:15,426 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] [2022-11-22 02:50:15,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:50:15,427 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:50:15,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:15,427 INFO L85 PathProgramCache]: Analyzing trace with hash 538184111, now seen corresponding path program 1 times [2022-11-22 02:50:15,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:15,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276664002] [2022-11-22 02:50:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:15,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:15,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:15,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276664002] [2022-11-22 02:50:15,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276664002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:15,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:15,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:50:15,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461419042] [2022-11-22 02:50:15,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:15,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:50:15,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:50:15,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:50:15,675 INFO L87 Difference]: Start difference. First operand 62078 states and 102157 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:50:23,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:23,252 INFO L93 Difference]: Finished difference Result 175423 states and 294597 transitions. [2022-11-22 02:50:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:50:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2022-11-22 02:50:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:24,005 INFO L225 Difference]: With dead ends: 175423 [2022-11-22 02:50:24,005 INFO L226 Difference]: Without dead ends: 113351 [2022-11-22 02:50:24,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:50:24,206 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 644 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:24,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 554 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:50:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113351 states. [2022-11-22 02:50:31,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113351 to 97221. [2022-11-22 02:50:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97221 states, 83995 states have (on average 1.5123162092981726) internal successors, (127027), 82458 states have internal predecessors, (127027), 8053 states have call successors, (8053), 3832 states have call predecessors, (8053), 5172 states have return successors, (25856), 10931 states have call predecessors, (25856), 8053 states have call successors, (25856) [2022-11-22 02:50:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97221 states to 97221 states and 160936 transitions. [2022-11-22 02:50:31,614 INFO L78 Accepts]: Start accepts. Automaton has 97221 states and 160936 transitions. Word has length 63 [2022-11-22 02:50:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:31,615 INFO L495 AbstractCegarLoop]: Abstraction has 97221 states and 160936 transitions. [2022-11-22 02:50:31,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 02:50:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 97221 states and 160936 transitions. [2022-11-22 02:50:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-22 02:50:31,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:31,617 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] [2022-11-22 02:50:31,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:50:31,618 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:50:31,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:31,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1792666306, now seen corresponding path program 1 times [2022-11-22 02:50:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:31,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217755752] [2022-11-22 02:50:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:31,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:31,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:31,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217755752] [2022-11-22 02:50:31,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217755752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:31,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:31,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:50:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437890716] [2022-11-22 02:50:31,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:31,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:50:31,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:50:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:50:31,817 INFO L87 Difference]: Start difference. First operand 97221 states and 160936 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)