./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+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_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/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_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/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_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/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 257fbefed94a1e5b18da17b648f63b8a4a376ab6bd67ba2a090c30b5997c5667 --- 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 18:05:42,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:05:42,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:05:42,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:05:42,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:05:42,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:05:42,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:05:42,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:05:42,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:05:42,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:05:42,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:05:42,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:05:42,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:05:42,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:05:42,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:05:42,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:05:42,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:05:42,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:05:42,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:05:42,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:05:42,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:05:42,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:05:42,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:05:42,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:05:42,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:05:42,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:05:42,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:05:42,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:05:42,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:05:42,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:05:42,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:05:42,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:05:42,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:05:42,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:05:42,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:05:42,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:05:42,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:05:42,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:05:42,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:05:42,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:05:42,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:05:42,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:05:42,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:05:42,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:05:42,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:05:42,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:05:42,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:05:42,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:05:42,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:05:42,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:05:42,518 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:05:42,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:05:42,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:05:42,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:05:42,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:05:42,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:05:42,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:05:42,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:05:42,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:05:42,521 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:05:42,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:05:42,522 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:05:42,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:05:42,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:05:42,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:05:42,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:05:42,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:05:42,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:05:42,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:05:42,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:05:42,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:05:42,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:05:42,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:05:42,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:05:42,526 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:05:42,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:05:42,526 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_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 257fbefed94a1e5b18da17b648f63b8a4a376ab6bd67ba2a090c30b5997c5667 [2022-11-25 18:05:42,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:05:42,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:05:42,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:05:42,951 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:05:42,951 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:05:42,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c [2022-11-25 18:05:46,265 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:05:47,128 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:05:47,157 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c [2022-11-25 18:05:47,262 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/data/71ffca965/077d382ddcc54b71a3e50340b4a22067/FLAGddf6f262b [2022-11-25 18:05:47,296 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/data/71ffca965/077d382ddcc54b71a3e50340b4a22067 [2022-11-25 18:05:47,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:05:47,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:05:47,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:05:47,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:05:47,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:05:47,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:47" (1/1) ... [2022-11-25 18:05:47,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d6abe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:47, skipping insertion in model container [2022-11-25 18:05:47,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:05:47" (1/1) ... [2022-11-25 18:05:47,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:05:47,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:05:50,141 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_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c[378560,378573] [2022-11-25 18:05:50,186 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_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c[383339,383352] [2022-11-25 18:05:50,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:05:50,626 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:05:52,075 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_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c[378560,378573] [2022-11-25 18:05:52,082 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_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c[383339,383352] [2022-11-25 18:05:52,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:05:52,213 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:05:52,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52 WrapperNode [2022-11-25 18:05:52,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:05:52,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:05:52,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:05:52,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:05:52,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:52,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:52,979 INFO L138 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13146 [2022-11-25 18:05:52,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:05:52,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:05:52,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:05:52,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:05:52,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:52,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:53,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:53,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:53,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:53,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:53,536 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:53,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:53,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:05:53,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:05:53,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:05:53,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:05:53,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (1/1) ... [2022-11-25 18:05:53,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:05:53,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:53,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:05:53,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ac1d3d7-2480-473a-b3d4-bc2e509b6c10/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:05:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:05:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 18:05:53,712 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 18:05:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 18:05:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 18:05:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 18:05:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 18:05:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-25 18:05:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-25 18:05:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 18:05:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 18:05:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 18:05:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 18:05:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 18:05:53,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 18:05:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:05:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:05:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:05:54,050 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:05:54,064 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:06:04,578 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:06:04,611 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:06:04,612 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-25 18:06:04,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:06:04 BoogieIcfgContainer [2022-11-25 18:06:04,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:06:04,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:06:04,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:06:04,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:06:04,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:05:47" (1/3) ... [2022-11-25 18:06:04,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7cb184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:06:04, skipping insertion in model container [2022-11-25 18:06:04,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:05:52" (2/3) ... [2022-11-25 18:06:04,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7cb184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:06:04, skipping insertion in model container [2022-11-25 18:06:04,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:06:04" (3/3) ... [2022-11-25 18:06:04,627 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.11.cil-1.c [2022-11-25 18:06:04,648 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:06:04,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:06:04,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:06:04,854 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;@14b703e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:06:04,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:06:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 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 18:06:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:06:04,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:04,894 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, 1] [2022-11-25 18:06:04,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:04,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:04,900 INFO L85 PathProgramCache]: Analyzing trace with hash 563980701, now seen corresponding path program 1 times [2022-11-25 18:06:04,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:04,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116422238] [2022-11-25 18:06:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:04,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:05,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:06:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:06:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:05,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:06:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:05,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:06:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:05,609 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 18:06:05,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:05,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116422238] [2022-11-25 18:06:05,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116422238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:05,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:05,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:06:05,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678822519] [2022-11-25 18:06:05,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:05,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:06:05,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:05,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:06:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:06:05,667 INFO L87 Difference]: Start difference. First operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 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 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 18:06:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:08,764 INFO L93 Difference]: Finished difference Result 5214 states and 9575 transitions. [2022-11-25 18:06:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:06:08,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 168 [2022-11-25 18:06:08,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:08,810 INFO L225 Difference]: With dead ends: 5214 [2022-11-25 18:06:08,810 INFO L226 Difference]: Without dead ends: 2611 [2022-11-25 18:06:08,827 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 18:06:08,835 INFO L413 NwaCegarLoop]: 4359 mSDtfsCounter, 971 mSDsluCounter, 12457 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 16816 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:08,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 16816 Invalid, 1018 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 18:06:08,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-11-25 18:06:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2480. [2022-11-25 18:06:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2445 states have (on average 1.8286298568507158) internal successors, (4471), 2448 states have internal predecessors, (4471), 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 18:06:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4523 transitions. [2022-11-25 18:06:09,071 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4523 transitions. Word has length 168 [2022-11-25 18:06:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:09,072 INFO L495 AbstractCegarLoop]: Abstraction has 2480 states and 4523 transitions. [2022-11-25 18:06:09,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 18:06:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4523 transitions. [2022-11-25 18:06:09,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:06:09,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:09,090 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, 1] [2022-11-25 18:06:09,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:06:09,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1969172379, now seen corresponding path program 1 times [2022-11-25 18:06:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:09,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784312968] [2022-11-25 18:06:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:09,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:06:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:09,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:06:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:06:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:06:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:06:09,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784312968] [2022-11-25 18:06:09,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784312968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:09,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:09,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:06:09,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514637315] [2022-11-25 18:06:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:09,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:06:09,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:06:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:06:09,674 INFO L87 Difference]: Start difference. First operand 2480 states and 4523 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 18:06:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:14,701 INFO L93 Difference]: Finished difference Result 3438 states and 6074 transitions. [2022-11-25 18:06:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:06:14,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 168 [2022-11-25 18:06:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:14,725 INFO L225 Difference]: With dead ends: 3438 [2022-11-25 18:06:14,726 INFO L226 Difference]: Without dead ends: 3098 [2022-11-25 18:06:14,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:06:14,735 INFO L413 NwaCegarLoop]: 4295 mSDtfsCounter, 5419 mSDsluCounter, 12793 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5437 SdHoareTripleChecker+Valid, 17088 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:14,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5437 Valid, 17088 Invalid, 2318 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [112 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 18:06:14,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2022-11-25 18:06:14,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2835. [2022-11-25 18:06:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8016588532275515) internal successors, (4996), 2777 states have internal predecessors, (4996), 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 18:06:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5091 transitions. [2022-11-25 18:06:14,987 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5091 transitions. Word has length 168 [2022-11-25 18:06:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:14,990 INFO L495 AbstractCegarLoop]: Abstraction has 2835 states and 5091 transitions. [2022-11-25 18:06:14,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 18:06:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5091 transitions. [2022-11-25 18:06:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:06:15,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:15,002 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, 1] [2022-11-25 18:06:15,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:06:15,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1403394409, now seen corresponding path program 1 times [2022-11-25 18:06:15,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:15,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457692722] [2022-11-25 18:06:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:15,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:06:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:06:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:06:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:06:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:15,603 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 18:06:15,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:15,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457692722] [2022-11-25 18:06:15,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457692722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:15,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:15,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:15,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444292294] [2022-11-25 18:06:15,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:15,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:15,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:15,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:15,613 INFO L87 Difference]: Start difference. First operand 2835 states and 5091 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:21,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:21,528 INFO L93 Difference]: Finished difference Result 4296 states and 7459 transitions. [2022-11-25 18:06:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:06:21,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-11-25 18:06:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:21,549 INFO L225 Difference]: With dead ends: 4296 [2022-11-25 18:06:21,550 INFO L226 Difference]: Without dead ends: 3601 [2022-11-25 18:06:21,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:06:21,563 INFO L413 NwaCegarLoop]: 4495 mSDtfsCounter, 5446 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5464 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 3407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:21,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5464 Valid, 22154 Invalid, 3407 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 18:06:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2022-11-25 18:06:21,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3165. [2022-11-25 18:06:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3076 states have (on average 1.7786085825747724) internal successors, (5471), 3081 states have internal predecessors, (5471), 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 18:06:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5608 transitions. [2022-11-25 18:06:21,769 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5608 transitions. Word has length 168 [2022-11-25 18:06:21,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:21,770 INFO L495 AbstractCegarLoop]: Abstraction has 3165 states and 5608 transitions. [2022-11-25 18:06:21,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5608 transitions. [2022-11-25 18:06:21,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:06:21,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:21,774 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, 1] [2022-11-25 18:06:21,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:06:21,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 493585049, now seen corresponding path program 1 times [2022-11-25 18:06:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:21,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695354350] [2022-11-25 18:06:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:21,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:06:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:06:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:06:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:22,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:06:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:22,128 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 18:06:22,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:22,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695354350] [2022-11-25 18:06:22,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695354350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:22,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:22,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756605674] [2022-11-25 18:06:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:22,133 INFO L87 Difference]: Start difference. First operand 3165 states and 5608 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:27,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:27,794 INFO L93 Difference]: Finished difference Result 5561 states and 9484 transitions. [2022-11-25 18:06:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:06:27,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-11-25 18:06:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:27,828 INFO L225 Difference]: With dead ends: 5561 [2022-11-25 18:06:27,828 INFO L226 Difference]: Without dead ends: 4536 [2022-11-25 18:06:27,834 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 18:06:27,835 INFO L413 NwaCegarLoop]: 4493 mSDtfsCounter, 5444 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5462 SdHoareTripleChecker+Valid, 22152 SdHoareTripleChecker+Invalid, 3405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:27,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5462 Valid, 22152 Invalid, 3405 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 18:06:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2022-11-25 18:06:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3826. [2022-11-25 18:06:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3683 states have (on average 1.743687211512354) internal successors, (6422), 3690 states have internal predecessors, (6422), 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 18:06:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 6647 transitions. [2022-11-25 18:06:28,182 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 6647 transitions. Word has length 168 [2022-11-25 18:06:28,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:28,183 INFO L495 AbstractCegarLoop]: Abstraction has 3826 states and 6647 transitions. [2022-11-25 18:06:28,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 6647 transitions. [2022-11-25 18:06:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:06:28,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:28,188 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, 1] [2022-11-25 18:06:28,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:06:28,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:28,189 INFO L85 PathProgramCache]: Analyzing trace with hash 831872599, now seen corresponding path program 1 times [2022-11-25 18:06:28,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:28,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371659408] [2022-11-25 18:06:28,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:28,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:28,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:06:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:06:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:06:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:28,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:06:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:28,573 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 18:06:28,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:28,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371659408] [2022-11-25 18:06:28,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371659408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:28,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:28,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:28,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447232549] [2022-11-25 18:06:28,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:28,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:28,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:28,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:28,579 INFO L87 Difference]: Start difference. First operand 3826 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:34,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:34,515 INFO L93 Difference]: Finished difference Result 7994 states and 13355 transitions. [2022-11-25 18:06:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:06:34,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-11-25 18:06:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:34,551 INFO L225 Difference]: With dead ends: 7994 [2022-11-25 18:06:34,551 INFO L226 Difference]: Without dead ends: 6308 [2022-11-25 18:06:34,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:06:34,561 INFO L413 NwaCegarLoop]: 4493 mSDtfsCounter, 5440 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 3329 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5458 SdHoareTripleChecker+Valid, 22152 SdHoareTripleChecker+Invalid, 3396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:34,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5458 Valid, 22152 Invalid, 3396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3329 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 18:06:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2022-11-25 18:06:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5149. [2022-11-25 18:06:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 4898 states have (on average 1.699469171090241) internal successors, (8324), 4909 states have internal predecessors, (8324), 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 18:06:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 8731 transitions. [2022-11-25 18:06:35,291 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 8731 transitions. Word has length 168 [2022-11-25 18:06:35,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:35,292 INFO L495 AbstractCegarLoop]: Abstraction has 5149 states and 8731 transitions. [2022-11-25 18:06:35,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 8731 transitions. [2022-11-25 18:06:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:06:35,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:35,299 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, 1] [2022-11-25 18:06:35,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:06:35,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:35,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:35,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1258427097, now seen corresponding path program 1 times [2022-11-25 18:06:35,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:35,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140705650] [2022-11-25 18:06:35,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:35,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:35,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:06:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:35,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:06:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:06:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:06:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:35,686 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 18:06:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:35,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140705650] [2022-11-25 18:06:35,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140705650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:35,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:35,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952165795] [2022-11-25 18:06:35,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:35,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:35,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:35,691 INFO L87 Difference]: Start difference. First operand 5149 states and 8731 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:42,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:42,042 INFO L93 Difference]: Finished difference Result 12859 states and 21113 transitions. [2022-11-25 18:06:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:06:42,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-11-25 18:06:42,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:42,092 INFO L225 Difference]: With dead ends: 12859 [2022-11-25 18:06:42,093 INFO L226 Difference]: Without dead ends: 9850 [2022-11-25 18:06:42,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:06:42,108 INFO L413 NwaCegarLoop]: 4493 mSDtfsCounter, 5436 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 3320 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5454 SdHoareTripleChecker+Valid, 22152 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:42,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5454 Valid, 22152 Invalid, 3387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3320 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 18:06:42,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9850 states. [2022-11-25 18:06:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9850 to 7800. [2022-11-25 18:06:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 7333 states have (on average 1.654711577798991) internal successors, (12134), 7352 states have internal predecessors, (12134), 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 18:06:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 12923 transitions. [2022-11-25 18:06:43,040 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 12923 transitions. Word has length 168 [2022-11-25 18:06:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:43,041 INFO L495 AbstractCegarLoop]: Abstraction has 7800 states and 12923 transitions. [2022-11-25 18:06:43,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 12923 transitions. [2022-11-25 18:06:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:06:43,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:43,048 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, 1] [2022-11-25 18:06:43,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:06:43,049 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash 717997591, now seen corresponding path program 1 times [2022-11-25 18:06:43,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:43,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330160638] [2022-11-25 18:06:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:43,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:06:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:06:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:06:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:06:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:43,420 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 18:06:43,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:43,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330160638] [2022-11-25 18:06:43,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330160638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:43,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:43,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004828015] [2022-11-25 18:06:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:43,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:43,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:43,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:43,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:43,423 INFO L87 Difference]: Start difference. First operand 7800 states and 12923 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:50,776 INFO L93 Difference]: Finished difference Result 22588 states and 36687 transitions. [2022-11-25 18:06:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:06:50,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-11-25 18:06:50,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:50,848 INFO L225 Difference]: With dead ends: 22588 [2022-11-25 18:06:50,848 INFO L226 Difference]: Without dead ends: 16928 [2022-11-25 18:06:50,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:06:50,872 INFO L413 NwaCegarLoop]: 4493 mSDtfsCounter, 5438 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 3306 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5456 SdHoareTripleChecker+Valid, 22152 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:50,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5456 Valid, 22152 Invalid, 3373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3306 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 18:06:50,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16928 states. [2022-11-25 18:06:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16928 to 13115. [2022-11-25 18:06:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6185330713817945) internal successors, (19772), 12251 states have internal predecessors, (19772), 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 18:06:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21379 transitions. [2022-11-25 18:06:52,147 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21379 transitions. Word has length 168 [2022-11-25 18:06:52,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:52,147 INFO L495 AbstractCegarLoop]: Abstraction has 13115 states and 21379 transitions. [2022-11-25 18:06:52,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21379 transitions. [2022-11-25 18:06:52,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:06:52,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:52,158 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, 1] [2022-11-25 18:06:52,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:06:52,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:52,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:52,159 INFO L85 PathProgramCache]: Analyzing trace with hash 562017049, now seen corresponding path program 1 times [2022-11-25 18:06:52,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:52,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577444988] [2022-11-25 18:06:52,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:52,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:06:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:06:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:06:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:06:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:52,430 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 18:06:52,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:52,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577444988] [2022-11-25 18:06:52,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577444988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:52,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:52,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:52,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49106530] [2022-11-25 18:06:52,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:52,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:52,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:52,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:52,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:52,433 INFO L87 Difference]: Start difference. First operand 13115 states and 21379 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:06:56,589 INFO L93 Difference]: Finished difference Result 28108 states and 45760 transitions. [2022-11-25 18:06:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:06:56,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-11-25 18:06:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:06:56,658 INFO L225 Difference]: With dead ends: 28108 [2022-11-25 18:06:56,658 INFO L226 Difference]: Without dead ends: 17133 [2022-11-25 18:06:56,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:06:56,700 INFO L413 NwaCegarLoop]: 4247 mSDtfsCounter, 5186 mSDsluCounter, 12587 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5205 SdHoareTripleChecker+Valid, 16834 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:06:56,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5205 Valid, 16834 Invalid, 1618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 18:06:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17133 states. [2022-11-25 18:06:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17133 to 13115. [2022-11-25 18:06:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6158316961362147) internal successors, (19739), 12251 states have internal predecessors, (19739), 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 18:06:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21346 transitions. [2022-11-25 18:06:58,469 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21346 transitions. Word has length 168 [2022-11-25 18:06:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:06:58,470 INFO L495 AbstractCegarLoop]: Abstraction has 13115 states and 21346 transitions. [2022-11-25 18:06:58,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:06:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21346 transitions. [2022-11-25 18:06:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:06:58,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:06:58,483 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, 1] [2022-11-25 18:06:58,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:06:58,483 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:06:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:06:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1225852773, now seen corresponding path program 1 times [2022-11-25 18:06:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:06:58,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290546799] [2022-11-25 18:06:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:06:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:06:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:06:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:06:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:06:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:06:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:06:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:06:58,818 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 18:06:58,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:06:58,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290546799] [2022-11-25 18:06:58,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290546799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:06:58,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:06:58,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:06:58,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726674945] [2022-11-25 18:06:58,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:06:58,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:06:58,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:06:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:06:58,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:06:58,822 INFO L87 Difference]: Start difference. First operand 13115 states and 21346 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:07:08,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:08,463 INFO L93 Difference]: Finished difference Result 41980 states and 67733 transitions. [2022-11-25 18:07:08,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:07:08,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-11-25 18:07:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:08,612 INFO L225 Difference]: With dead ends: 41980 [2022-11-25 18:07:08,612 INFO L226 Difference]: Without dead ends: 31005 [2022-11-25 18:07:08,657 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 18:07:08,660 INFO L413 NwaCegarLoop]: 4493 mSDtfsCounter, 5427 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 22152 SdHoareTripleChecker+Invalid, 3320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:08,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5445 Valid, 22152 Invalid, 3320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3253 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 18:07:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31005 states. [2022-11-25 18:07:11,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31005 to 23840. [2022-11-25 18:07:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23840 states, 22077 states have (on average 1.5910223309326448) internal successors, (35125), 22144 states have internal predecessors, (35125), 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 18:07:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23840 states to 23840 states and 38530 transitions. [2022-11-25 18:07:12,111 INFO L78 Accepts]: Start accepts. Automaton has 23840 states and 38530 transitions. Word has length 168 [2022-11-25 18:07:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:07:12,112 INFO L495 AbstractCegarLoop]: Abstraction has 23840 states and 38530 transitions. [2022-11-25 18:07:12,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:07:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand 23840 states and 38530 transitions. [2022-11-25 18:07:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:07:12,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:12,131 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, 1] [2022-11-25 18:07:12,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:07:12,132 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:12,133 INFO L85 PathProgramCache]: Analyzing trace with hash 933231321, now seen corresponding path program 1 times [2022-11-25 18:07:12,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:12,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813672775] [2022-11-25 18:07:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:07:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:12,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:07:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:07:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:07:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:07:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:12,487 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 18:07:12,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:12,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813672775] [2022-11-25 18:07:12,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813672775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:12,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:12,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:07:12,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087167360] [2022-11-25 18:07:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:12,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:07:12,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:07:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:07:12,491 INFO L87 Difference]: Start difference. First operand 23840 states and 38530 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:07:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:26,364 INFO L93 Difference]: Finished difference Result 80899 states and 130827 transitions. [2022-11-25 18:07:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 18:07:26,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2022-11-25 18:07:26,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:26,730 INFO L225 Difference]: With dead ends: 80899 [2022-11-25 18:07:26,731 INFO L226 Difference]: Without dead ends: 59199 [2022-11-25 18:07:26,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:07:26,843 INFO L413 NwaCegarLoop]: 4493 mSDtfsCounter, 5426 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5444 SdHoareTripleChecker+Valid, 22152 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:26,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5444 Valid, 22152 Invalid, 3307 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:07:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59199 states. [2022-11-25 18:07:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59199 to 45349. [2022-11-25 18:07:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45349 states, 41858 states have (on average 1.5763533852549094) internal successors, (65983), 41989 states have internal predecessors, (65983), 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 18:07:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45349 states to 45349 states and 73470 transitions. [2022-11-25 18:07:34,531 INFO L78 Accepts]: Start accepts. Automaton has 45349 states and 73470 transitions. Word has length 168 [2022-11-25 18:07:34,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:07:34,531 INFO L495 AbstractCegarLoop]: Abstraction has 45349 states and 73470 transitions. [2022-11-25 18:07:34,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 18:07:34,532 INFO L276 IsEmpty]: Start isEmpty. Operand 45349 states and 73470 transitions. [2022-11-25 18:07:34,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-25 18:07:34,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:34,566 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, 1] [2022-11-25 18:07:34,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:07:34,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:34,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:34,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1002879195, now seen corresponding path program 1 times [2022-11-25 18:07:34,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:34,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392370470] [2022-11-25 18:07:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:07:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 18:07:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 18:07:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-25 18:07:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-25 18:07:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:35,122 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 18:07:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:35,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392370470] [2022-11-25 18:07:35,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392370470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:35,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:35,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:07:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120159668] [2022-11-25 18:07:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:35,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:07:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:07:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:07:35,126 INFO L87 Difference]: Start difference. First operand 45349 states and 73470 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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)