./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 --- 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-38b53e6 [2022-11-25 15:32:34,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:32:34,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:32:34,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:32:34,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:32:34,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:32:34,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:32:34,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:32:34,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:32:34,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:32:34,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:32:34,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:32:34,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:32:34,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:32:34,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:32:34,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:32:34,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:32:34,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:32:34,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:32:34,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:32:34,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:32:34,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:32:34,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:32:34,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:32:34,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:32:34,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:32:34,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:32:34,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:32:34,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:32:34,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:32:34,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:32:34,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:32:34,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:32:34,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:32:34,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:32:34,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:32:34,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:32:34,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:32:34,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:32:34,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:32:34,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:32:34,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:32:34,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:32:34,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:32:34,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:32:34,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:32:34,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:32:34,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:32:34,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:32:34,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:32:34,367 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:32:34,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:32:34,368 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:32:34,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:32:34,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:32:34,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:32:34,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:32:34,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:32:34,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:32:34,370 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:32:34,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:32:34,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:32:34,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:32:34,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:32:34,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:32:34,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:32:34,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:32:34,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:32:34,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:32:34,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:32:34,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:32:34,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:32:34,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:32:34,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:32:34,374 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:32:34,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:32:34,374 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f20a4b12634e812af836a5fe92e9d987e7766e2c28337c49504608346f2347 [2022-11-25 15:32:34,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:32:34,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:32:34,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:32:34,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:32:34,673 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:32:34,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2022-11-25 15:32:37,940 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:32:38,190 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:32:38,191 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/sv-benchmarks/c/systemc/token_ring.11.cil-1.c [2022-11-25 15:32:38,220 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/data/2502f5c46/c4acc40de4e14262b768aab06ecedf53/FLAG18c8c3886 [2022-11-25 15:32:38,236 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/data/2502f5c46/c4acc40de4e14262b768aab06ecedf53 [2022-11-25 15:32:38,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:32:38,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:32:38,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:32:38,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:32:38,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:32:38,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cb61a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38, skipping insertion in model container [2022-11-25 15:32:38,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:32:38,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:32:38,465 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_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2022-11-25 15:32:38,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:32:38,630 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:32:38,643 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_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/sv-benchmarks/c/systemc/token_ring.11.cil-1.c[671,684] [2022-11-25 15:32:38,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:32:38,742 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:32:38,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38 WrapperNode [2022-11-25 15:32:38,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:32:38,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:32:38,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:32:38,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:32:38,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,817 INFO L138 Inliner]: procedures = 50, calls = 65, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 800 [2022-11-25 15:32:38,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:32:38,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:32:38,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:32:38,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:32:38,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,870 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:32:38,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:32:38,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:32:38,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:32:38,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (1/1) ... [2022-11-25 15:32:38,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:32:38,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:32:38,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:32:38,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ae1d8e-8d84-44e1-8d42-b3e7a4e5bb43/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:32:38,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:32:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 15:32:38,989 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 15:32:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 15:32:38,989 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 15:32:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 15:32:38,990 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 15:32:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-25 15:32:38,990 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-25 15:32:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 15:32:38,991 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 15:32:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 15:32:38,991 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 15:32:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 15:32:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 15:32:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:32:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:32:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:32:39,130 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:32:39,133 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:32:40,291 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:32:40,322 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:32:40,322 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-25 15:32:40,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:32:40 BoogieIcfgContainer [2022-11-25 15:32:40,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:32:40,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:32:40,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:32:40,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:32:40,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:32:38" (1/3) ... [2022-11-25 15:32:40,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6350b176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:32:40, skipping insertion in model container [2022-11-25 15:32:40,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:38" (2/3) ... [2022-11-25 15:32:40,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6350b176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:32:40, skipping insertion in model container [2022-11-25 15:32:40,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:32:40" (3/3) ... [2022-11-25 15:32:40,349 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-1.c [2022-11-25 15:32:40,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:32:40,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:32:40,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:32:40,494 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=PETRI_NET, 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;@6fe63fda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:32:40,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:32:40,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 365 states, 329 states have (on average 1.6656534954407294) internal successors, (548), 333 states have internal predecessors, (548), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-25 15:32:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:32:40,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:40,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:40,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:40,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:40,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1184311821, now seen corresponding path program 1 times [2022-11-25 15:32:40,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:40,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741122706] [2022-11-25 15:32:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:40,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:32:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:32:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:32:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:32:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:32:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:41,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:41,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741122706] [2022-11-25 15:32:41,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741122706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:41,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:41,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:32:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106851321] [2022-11-25 15:32:41,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:41,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:32:41,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:41,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:32:41,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:32:41,451 INFO L87 Difference]: Start difference. First operand has 365 states, 329 states have (on average 1.6656534954407294) internal successors, (548), 333 states have internal predecessors, (548), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:32:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:44,135 INFO L93 Difference]: Finished difference Result 851 states and 1417 transitions. [2022-11-25 15:32:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:32:44,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:32:44,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:44,156 INFO L225 Difference]: With dead ends: 851 [2022-11-25 15:32:44,157 INFO L226 Difference]: Without dead ends: 490 [2022-11-25 15:32:44,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:32:44,173 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 975 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:44,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 725 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 15:32:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-25 15:32:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 359. [2022-11-25 15:32:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 325 states have (on average 1.5784615384615384) internal successors, (513), 327 states have internal predecessors, (513), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-25 15:32:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 565 transitions. [2022-11-25 15:32:44,353 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 565 transitions. Word has length 167 [2022-11-25 15:32:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:44,354 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 565 transitions. [2022-11-25 15:32:44,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:32:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 565 transitions. [2022-11-25 15:32:44,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:32:44,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:44,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:44,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:32:44,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:44,371 INFO L85 PathProgramCache]: Analyzing trace with hash -915426609, now seen corresponding path program 1 times [2022-11-25 15:32:44,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:44,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965138865] [2022-11-25 15:32:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:44,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:44,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:32:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:32:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:32:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:44,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:32:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:32:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:44,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:44,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965138865] [2022-11-25 15:32:44,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965138865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:44,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:44,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:32:44,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374824621] [2022-11-25 15:32:44,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:44,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:32:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:32:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:32:44,698 INFO L87 Difference]: Start difference. First operand 359 states and 565 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:32:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:46,909 INFO L93 Difference]: Finished difference Result 833 states and 1329 transitions. [2022-11-25 15:32:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:32:46,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:32:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:46,938 INFO L225 Difference]: With dead ends: 833 [2022-11-25 15:32:46,938 INFO L226 Difference]: Without dead ends: 490 [2022-11-25 15:32:46,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:32:46,941 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 962 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:46,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 711 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 15:32:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-25 15:32:47,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 359. [2022-11-25 15:32:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 325 states have (on average 1.5753846153846154) internal successors, (512), 327 states have internal predecessors, (512), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-25 15:32:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 564 transitions. [2022-11-25 15:32:47,006 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 564 transitions. Word has length 167 [2022-11-25 15:32:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:47,007 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 564 transitions. [2022-11-25 15:32:47,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:32:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 564 transitions. [2022-11-25 15:32:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:32:47,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:47,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:47,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:32:47,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:47,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:47,012 INFO L85 PathProgramCache]: Analyzing trace with hash 7740817, now seen corresponding path program 1 times [2022-11-25 15:32:47,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:47,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184581074] [2022-11-25 15:32:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:47,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:47,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:32:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:47,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:32:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:32:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:32:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:47,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:32:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:47,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:47,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184581074] [2022-11-25 15:32:47,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184581074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:47,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:47,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:32:47,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434401369] [2022-11-25 15:32:47,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:47,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:32:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:32:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:32:47,313 INFO L87 Difference]: Start difference. First operand 359 states and 564 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:32:51,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:51,402 INFO L93 Difference]: Finished difference Result 1317 states and 2115 transitions. [2022-11-25 15:32:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:32:51,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:32:51,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:51,410 INFO L225 Difference]: With dead ends: 1317 [2022-11-25 15:32:51,410 INFO L226 Difference]: Without dead ends: 977 [2022-11-25 15:32:51,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:32:51,420 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1461 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 2205 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:51,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 1253 Invalid, 2317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 2205 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 15:32:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-11-25 15:32:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 714. [2022-11-25 15:32:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 653 states have (on average 1.5880551301684533) internal successors, (1037), 656 states have internal predecessors, (1037), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-11-25 15:32:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1132 transitions. [2022-11-25 15:32:51,547 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1132 transitions. Word has length 167 [2022-11-25 15:32:51,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:51,548 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 1132 transitions. [2022-11-25 15:32:51,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:32:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1132 transitions. [2022-11-25 15:32:51,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:32:51,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:51,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:51,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:32:51,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:51,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash 930141325, now seen corresponding path program 1 times [2022-11-25 15:32:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:51,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920396594] [2022-11-25 15:32:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:32:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:32:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:32:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:32:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:32:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:51,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:51,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920396594] [2022-11-25 15:32:51,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920396594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:51,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:51,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:32:51,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847406206] [2022-11-25 15:32:51,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:51,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:32:51,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:32:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:32:51,994 INFO L87 Difference]: Start difference. First operand 714 states and 1132 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:32:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:56,754 INFO L93 Difference]: Finished difference Result 2175 states and 3500 transitions. [2022-11-25 15:32:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:32:56,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:32:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:56,783 INFO L225 Difference]: With dead ends: 2175 [2022-11-25 15:32:56,786 INFO L226 Difference]: Without dead ends: 1480 [2022-11-25 15:32:56,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:32:56,791 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 1488 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:56,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 2360 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3341 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 15:32:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-11-25 15:32:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1044. [2022-11-25 15:32:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 956 states have (on average 1.5815899581589958) internal successors, (1512), 960 states have internal predecessors, (1512), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-11-25 15:32:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1649 transitions. [2022-11-25 15:32:56,937 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1649 transitions. Word has length 167 [2022-11-25 15:32:56,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:56,937 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1649 transitions. [2022-11-25 15:32:56,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:32:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1649 transitions. [2022-11-25 15:32:56,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:32:56,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:56,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:56,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:32:56,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1467846513, now seen corresponding path program 1 times [2022-11-25 15:32:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:56,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683922782] [2022-11-25 15:32:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:56,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:32:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:57,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:32:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:32:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:32:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:57,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:32:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:57,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:57,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683922782] [2022-11-25 15:32:57,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683922782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:57,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:57,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:32:57,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508295890] [2022-11-25 15:32:57,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:57,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:32:57,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:57,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:32:57,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:32:57,232 INFO L87 Difference]: Start difference. First operand 1044 states and 1649 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:02,048 INFO L93 Difference]: Finished difference Result 3440 states and 5525 transitions. [2022-11-25 15:33:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:33:02,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:33:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:02,065 INFO L225 Difference]: With dead ends: 3440 [2022-11-25 15:33:02,065 INFO L226 Difference]: Without dead ends: 2415 [2022-11-25 15:33:02,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:33:02,073 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1486 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 3337 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 3404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:02,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 2358 Invalid, 3404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3337 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 15:33:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2022-11-25 15:33:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 1705. [2022-11-25 15:33:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1563 states have (on average 1.5758157389635317) internal successors, (2463), 1569 states have internal predecessors, (2463), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-11-25 15:33:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2688 transitions. [2022-11-25 15:33:02,370 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2688 transitions. Word has length 167 [2022-11-25 15:33:02,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:02,370 INFO L495 AbstractCegarLoop]: Abstraction has 1705 states and 2688 transitions. [2022-11-25 15:33:02,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:02,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2688 transitions. [2022-11-25 15:33:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:33:02,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:02,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:02,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:33:02,374 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:02,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1129558963, now seen corresponding path program 1 times [2022-11-25 15:33:02,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:02,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694086749] [2022-11-25 15:33:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:02,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:33:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:02,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:33:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:33:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:33:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:33:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:02,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694086749] [2022-11-25 15:33:02,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694086749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:02,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:02,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:33:02,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247874462] [2022-11-25 15:33:02,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:02,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:33:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:33:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:33:02,708 INFO L87 Difference]: Start difference. First operand 1705 states and 2688 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:07,795 INFO L93 Difference]: Finished difference Result 5873 states and 9396 transitions. [2022-11-25 15:33:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:33:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:33:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:07,817 INFO L225 Difference]: With dead ends: 5873 [2022-11-25 15:33:07,817 INFO L226 Difference]: Without dead ends: 4187 [2022-11-25 15:33:07,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:33:07,824 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1482 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 3328 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:07,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 2358 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3328 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 15:33:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4187 states. [2022-11-25 15:33:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4187 to 3028. [2022-11-25 15:33:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2778 states have (on average 1.5712742980561556) internal successors, (4365), 2788 states have internal predecessors, (4365), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-11-25 15:33:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 4772 transitions. [2022-11-25 15:33:08,310 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 4772 transitions. Word has length 167 [2022-11-25 15:33:08,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:08,311 INFO L495 AbstractCegarLoop]: Abstraction has 3028 states and 4772 transitions. [2022-11-25 15:33:08,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:08,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 4772 transitions. [2022-11-25 15:33:08,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:33:08,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:08,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:08,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:33:08,315 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash -703004465, now seen corresponding path program 1 times [2022-11-25 15:33:08,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:08,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318562146] [2022-11-25 15:33:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:08,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:33:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:33:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:33:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:33:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:33:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:08,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318562146] [2022-11-25 15:33:08,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318562146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:08,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:08,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:33:08,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718173533] [2022-11-25 15:33:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:08,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:33:08,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:33:08,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:33:08,697 INFO L87 Difference]: Start difference. First operand 3028 states and 4772 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:14,056 INFO L93 Difference]: Finished difference Result 10738 states and 17154 transitions. [2022-11-25 15:33:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:33:14,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:33:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:14,091 INFO L225 Difference]: With dead ends: 10738 [2022-11-25 15:33:14,091 INFO L226 Difference]: Without dead ends: 7729 [2022-11-25 15:33:14,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:33:14,103 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1478 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:14,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 2358 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 15:33:14,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7729 states. [2022-11-25 15:33:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7729 to 5679. [2022-11-25 15:33:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5679 states, 5213 states have (on average 1.5681948973719548) internal successors, (8175), 5231 states have internal predecessors, (8175), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-11-25 15:33:15,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 8964 transitions. [2022-11-25 15:33:15,109 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 8964 transitions. Word has length 167 [2022-11-25 15:33:15,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:15,109 INFO L495 AbstractCegarLoop]: Abstraction has 5679 states and 8964 transitions. [2022-11-25 15:33:15,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 8964 transitions. [2022-11-25 15:33:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:33:15,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:15,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:15,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:33:15,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1243433971, now seen corresponding path program 1 times [2022-11-25 15:33:15,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:15,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203575834] [2022-11-25 15:33:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:15,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:15,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:33:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:33:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:15,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:33:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:33:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:15,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:33:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:15,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203575834] [2022-11-25 15:33:15,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203575834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:15,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:15,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:33:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650516287] [2022-11-25 15:33:15,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:15,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:33:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:15,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:33:15,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:33:15,413 INFO L87 Difference]: Start difference. First operand 5679 states and 8964 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:21,853 INFO L93 Difference]: Finished difference Result 20467 states and 32728 transitions. [2022-11-25 15:33:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:33:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:33:21,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:21,927 INFO L225 Difference]: With dead ends: 20467 [2022-11-25 15:33:21,927 INFO L226 Difference]: Without dead ends: 14807 [2022-11-25 15:33:21,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:33:21,952 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1480 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:21,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2358 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 15:33:21,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14807 states. [2022-11-25 15:33:23,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14807 to 10994. [2022-11-25 15:33:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10994 states, 10096 states have (on average 1.5662638668779714) internal successors, (15813), 10130 states have internal predecessors, (15813), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-11-25 15:33:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10994 states to 10994 states and 17420 transitions. [2022-11-25 15:33:23,778 INFO L78 Accepts]: Start accepts. Automaton has 10994 states and 17420 transitions. Word has length 167 [2022-11-25 15:33:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:23,778 INFO L495 AbstractCegarLoop]: Abstraction has 10994 states and 17420 transitions. [2022-11-25 15:33:23,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 10994 states and 17420 transitions. [2022-11-25 15:33:23,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:33:23,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:23,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:23,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:33:23,788 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:23,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1399414513, now seen corresponding path program 1 times [2022-11-25 15:33:23,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:23,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519557690] [2022-11-25 15:33:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:23,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:33:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:33:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:33:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:33:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:33:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:24,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519557690] [2022-11-25 15:33:24,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519557690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:24,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:24,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:33:24,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811465043] [2022-11-25 15:33:24,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:24,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:33:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:33:24,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:33:24,192 INFO L87 Difference]: Start difference. First operand 10994 states and 17420 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:33,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:33,205 INFO L93 Difference]: Finished difference Result 39893 states and 64006 transitions. [2022-11-25 15:33:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:33:33,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:33:33,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:33,325 INFO L225 Difference]: With dead ends: 39893 [2022-11-25 15:33:33,326 INFO L226 Difference]: Without dead ends: 28918 [2022-11-25 15:33:33,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:33:33,368 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1476 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:33,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 2358 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3277 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 15:33:33,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28918 states. [2022-11-25 15:33:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28918 to 21686. [2022-11-25 15:33:36,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21686 states, 19924 states have (on average 1.5658000401525798) internal successors, (31197), 19990 states have internal predecessors, (31197), 1307 states have call successors, (1307), 391 states have call predecessors, (1307), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-11-25 15:33:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21686 states to 21686 states and 34602 transitions. [2022-11-25 15:33:36,828 INFO L78 Accepts]: Start accepts. Automaton has 21686 states and 34602 transitions. Word has length 167 [2022-11-25 15:33:36,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:36,829 INFO L495 AbstractCegarLoop]: Abstraction has 21686 states and 34602 transitions. [2022-11-25 15:33:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 21686 states and 34602 transitions. [2022-11-25 15:33:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:33:36,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:36,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:36,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:33:36,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1107682961, now seen corresponding path program 1 times [2022-11-25 15:33:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:36,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320747563] [2022-11-25 15:33:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:36,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:36,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:33:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:37,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:33:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:33:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:33:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:37,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:33:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:37,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:37,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320747563] [2022-11-25 15:33:37,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320747563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:37,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:37,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:33:37,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990382898] [2022-11-25 15:33:37,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:37,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:33:37,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:33:37,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:33:37,128 INFO L87 Difference]: Start difference. First operand 21686 states and 34602 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:50,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:50,918 INFO L93 Difference]: Finished difference Result 78811 states and 127290 transitions. [2022-11-25 15:33:50,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:33:50,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:33:50,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:51,204 INFO L225 Difference]: With dead ends: 78811 [2022-11-25 15:33:51,204 INFO L226 Difference]: Without dead ends: 57144 [2022-11-25 15:33:51,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:33:51,287 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1475 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 3264 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:51,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 2358 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3264 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 15:33:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57144 states. [2022-11-25 15:33:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57144 to 43131. [2022-11-25 15:33:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43131 states, 39641 states have (on average 1.565424686561893) internal successors, (62055), 39771 states have internal predecessors, (62055), 2587 states have call successors, (2587), 775 states have call predecessors, (2587), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-11-25 15:33:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43131 states to 43131 states and 69542 transitions. [2022-11-25 15:33:58,013 INFO L78 Accepts]: Start accepts. Automaton has 43131 states and 69542 transitions. Word has length 167 [2022-11-25 15:33:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:58,013 INFO L495 AbstractCegarLoop]: Abstraction has 43131 states and 69542 transitions. [2022-11-25 15:33:58,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:33:58,014 INFO L276 IsEmpty]: Start isEmpty. Operand 43131 states and 69542 transitions. [2022-11-25 15:33:58,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 15:33:58,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:58,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:58,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:33:58,043 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1028200241, now seen corresponding path program 1 times [2022-11-25 15:33:58,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:58,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852418798] [2022-11-25 15:33:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:58,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:58,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:33:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 15:33:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:33:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:58,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-25 15:33:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:58,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:33:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:58,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:58,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852418798] [2022-11-25 15:33:58,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852418798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:58,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:58,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:33:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952734138] [2022-11-25 15:33:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:58,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:33:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:33:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:33:58,299 INFO L87 Difference]: Start difference. First operand 43131 states and 69542 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 15:34:19,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:19,332 INFO L93 Difference]: Finished difference Result 156646 states and 255704 transitions. [2022-11-25 15:34:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:34:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-25 15:34:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:19,997 INFO L225 Difference]: With dead ends: 156646 [2022-11-25 15:34:19,997 INFO L226 Difference]: Without dead ends: 113534 [2022-11-25 15:34:20,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:34:20,224 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1474 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:20,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 2358 Invalid, 3318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3251 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 15:34:20,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113534 states.