./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN --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 5f8c8484e54a4d715d6771fe823761e162b84321aa9b0770845c5d1629fcdad3 --- 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-6b4ec56 [2022-11-20 11:16:03,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:16:03,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:16:03,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:16:03,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:16:03,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:16:03,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:16:03,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:16:03,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:16:03,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:16:03,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:16:03,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:16:03,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:16:03,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:16:03,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:16:03,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:16:03,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:16:03,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:16:03,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:16:03,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:16:03,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:16:03,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:16:03,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:16:03,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:16:03,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:16:03,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:16:03,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:16:03,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:16:03,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:16:03,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:16:03,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:16:03,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:16:03,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:16:03,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:16:03,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:16:03,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:16:03,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:16:03,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:16:03,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:16:03,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:16:03,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:16:03,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:16:03,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:16:03,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:16:03,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:16:03,540 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:16:03,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:16:03,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:16:03,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:16:03,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:16:03,542 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:16:03,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:16:03,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:16:03,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:16:03,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:16:03,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:16:03,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:16:03,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:16:03,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:16:03,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:16:03,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:16:03,552 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:16:03,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:16:03,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:16:03,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:16:03,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:16:03,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:16:03,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:16:03,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:16:03,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:16:03,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:16:03,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:16:03,555 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:16:03,555 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:16:03,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:16:03,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f8c8484e54a4d715d6771fe823761e162b84321aa9b0770845c5d1629fcdad3 [2022-11-20 11:16:03,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:16:03,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:16:03,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:16:03,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:16:03,927 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:16:03,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-20 11:16:07,345 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:16:08,023 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:16:08,024 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-20 11:16:08,074 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/data/bb4148d49/6653d395f6a9413b9918df04feb90ffa/FLAGe6f05f407 [2022-11-20 11:16:08,097 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/data/bb4148d49/6653d395f6a9413b9918df04feb90ffa [2022-11-20 11:16:08,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:16:08,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:16:08,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:16:08,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:16:08,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:16:08,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:08" (1/1) ... [2022-11-20 11:16:08,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71341835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:08, skipping insertion in model container [2022-11-20 11:16:08,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:08" (1/1) ... [2022-11-20 11:16:08,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:16:08,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:16:08,788 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_714763f3-7c9b-4b89-ba74-0ab3b310a036/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label05.c[26888,26901] [2022-11-20 11:16:08,859 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_714763f3-7c9b-4b89-ba74-0ab3b310a036/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label05.c[33824,33837] [2022-11-20 11:16:09,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:16:09,933 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:16:10,007 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_714763f3-7c9b-4b89-ba74-0ab3b310a036/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label05.c[26888,26901] [2022-11-20 11:16:10,087 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_714763f3-7c9b-4b89-ba74-0ab3b310a036/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label05.c[33824,33837] [2022-11-20 11:16:10,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:16:10,790 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:16:10,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10 WrapperNode [2022-11-20 11:16:10,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:16:10,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:16:10,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:16:10,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:16:10,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:10,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,280 INFO L138 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5247 [2022-11-20 11:16:11,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:16:11,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:16:11,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:16:11,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:16:11,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,662 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:16:11,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:16:11,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:16:11,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:16:11,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (1/1) ... [2022-11-20 11:16:11,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:16:11,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:11,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:16:11,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714763f3-7c9b-4b89-ba74-0ab3b310a036/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:16:11,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:16:11,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:16:11,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:16:11,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:16:12,181 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:16:12,184 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:16:18,876 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:16:18,894 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:16:18,895 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:16:18,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:18 BoogieIcfgContainer [2022-11-20 11:16:18,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:16:18,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:16:18,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:16:18,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:16:18,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:16:08" (1/3) ... [2022-11-20 11:16:18,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f79c10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:16:18, skipping insertion in model container [2022-11-20 11:16:18,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:10" (2/3) ... [2022-11-20 11:16:18,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f79c10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:16:18, skipping insertion in model container [2022-11-20 11:16:18,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:18" (3/3) ... [2022-11-20 11:16:18,910 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-20 11:16:18,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:16:18,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:16:19,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:16:19,028 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;@1d62a4a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:16:19,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:16:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 949 states, 946 states have (on average 1.9027484143763214) internal successors, (1800), 948 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:16:19,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:19,051 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] [2022-11-20 11:16:19,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:19,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1967767115, now seen corresponding path program 1 times [2022-11-20 11:16:19,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:19,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646136801] [2022-11-20 11:16:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:19,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:19,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646136801] [2022-11-20 11:16:19,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646136801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:19,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:19,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:16:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993629818] [2022-11-20 11:16:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:19,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:16:19,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:19,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:16:19,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:16:19,463 INFO L87 Difference]: Start difference. First operand has 949 states, 946 states have (on average 1.9027484143763214) internal successors, (1800), 948 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:19,604 INFO L93 Difference]: Finished difference Result 1829 states and 3468 transitions. [2022-11-20 11:16:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:16:19,607 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-20 11:16:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:19,636 INFO L225 Difference]: With dead ends: 1829 [2022-11-20 11:16:19,636 INFO L226 Difference]: Without dead ends: 883 [2022-11-20 11:16:19,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:16:19,654 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:19,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-11-20 11:16:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2022-11-20 11:16:19,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8921679909194098) internal successors, (1667), 882 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1667 transitions. [2022-11-20 11:16:19,770 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1667 transitions. Word has length 30 [2022-11-20 11:16:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:19,771 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1667 transitions. [2022-11-20 11:16:19,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1667 transitions. [2022-11-20 11:16:19,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:16:19,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:19,779 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] [2022-11-20 11:16:19,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:16:19,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:19,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:19,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2101780621, now seen corresponding path program 1 times [2022-11-20 11:16:19,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:19,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259403860] [2022-11-20 11:16:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:19,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:20,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:20,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259403860] [2022-11-20 11:16:20,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259403860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:20,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:20,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:16:20,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889720802] [2022-11-20 11:16:20,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:20,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:16:20,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:20,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:16:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:16:20,195 INFO L87 Difference]: Start difference. First operand 883 states and 1667 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:20,433 INFO L93 Difference]: Finished difference Result 949 states and 1771 transitions. [2022-11-20 11:16:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:16:20,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-20 11:16:20,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:20,451 INFO L225 Difference]: With dead ends: 949 [2022-11-20 11:16:20,451 INFO L226 Difference]: Without dead ends: 883 [2022-11-20 11:16:20,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:16:20,454 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 3 mSDsluCounter, 4931 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6596 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:20,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6596 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:16:20,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-11-20 11:16:20,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2022-11-20 11:16:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8229284903518728) internal successors, (1606), 882 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1606 transitions. [2022-11-20 11:16:20,488 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1606 transitions. Word has length 30 [2022-11-20 11:16:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:20,489 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1606 transitions. [2022-11-20 11:16:20,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1606 transitions. [2022-11-20 11:16:20,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 11:16:20,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:20,501 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] [2022-11-20 11:16:20,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:16:20,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1501646299, now seen corresponding path program 1 times [2022-11-20 11:16:20,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:20,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321047944] [2022-11-20 11:16:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:20,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:20,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:20,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321047944] [2022-11-20 11:16:20,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321047944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:20,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:20,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225656930] [2022-11-20 11:16:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:20,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:16:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:16:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:16:20,949 INFO L87 Difference]: Start difference. First operand 883 states and 1606 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:31,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:31,456 INFO L93 Difference]: Finished difference Result 3138 states and 5915 transitions. [2022-11-20 11:16:31,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:16:31,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-20 11:16:31,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:31,469 INFO L225 Difference]: With dead ends: 3138 [2022-11-20 11:16:31,469 INFO L226 Difference]: Without dead ends: 2385 [2022-11-20 11:16:31,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:16:31,473 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 2527 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:31,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2527 Valid, 860 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-20 11:16:31,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-11-20 11:16:31,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2385. [2022-11-20 11:16:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 2383 states have (on average 1.56105749055812) internal successors, (3720), 2384 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:31,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 3720 transitions. [2022-11-20 11:16:31,587 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 3720 transitions. Word has length 60 [2022-11-20 11:16:31,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:31,588 INFO L495 AbstractCegarLoop]: Abstraction has 2385 states and 3720 transitions. [2022-11-20 11:16:31,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 3720 transitions. [2022-11-20 11:16:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 11:16:31,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:31,591 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] [2022-11-20 11:16:31,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:16:31,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1651582301, now seen corresponding path program 1 times [2022-11-20 11:16:31,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:31,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809619871] [2022-11-20 11:16:31,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:31,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:32,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:32,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809619871] [2022-11-20 11:16:32,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809619871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:32,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:32,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:16:32,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850368227] [2022-11-20 11:16:32,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:32,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:16:32,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:16:32,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:16:32,133 INFO L87 Difference]: Start difference. First operand 2385 states and 3720 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:32,995 INFO L93 Difference]: Finished difference Result 3377 states and 5320 transitions. [2022-11-20 11:16:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:16:32,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-11-20 11:16:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:33,012 INFO L225 Difference]: With dead ends: 3377 [2022-11-20 11:16:33,012 INFO L226 Difference]: Without dead ends: 3315 [2022-11-20 11:16:33,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:16:33,016 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 13578 mSDsluCounter, 3975 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13578 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:33,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13578 Valid, 5575 Invalid, 314 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:16:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2022-11-20 11:16:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 2445. [2022-11-20 11:16:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 2443 states have (on average 1.5624232501023332) internal successors, (3817), 2444 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:33,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 3817 transitions. [2022-11-20 11:16:33,118 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 3817 transitions. Word has length 90 [2022-11-20 11:16:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:33,120 INFO L495 AbstractCegarLoop]: Abstraction has 2445 states and 3817 transitions. [2022-11-20 11:16:33,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 3817 transitions. [2022-11-20 11:16:33,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:16:33,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:33,124 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] [2022-11-20 11:16:33,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:16:33,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash 551619955, now seen corresponding path program 1 times [2022-11-20 11:16:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:33,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033039741] [2022-11-20 11:16:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:33,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:33,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:33,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033039741] [2022-11-20 11:16:33,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033039741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:33,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:33,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:33,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540107080] [2022-11-20 11:16:33,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:33,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:33,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:33,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:33,302 INFO L87 Difference]: Start difference. First operand 2445 states and 3817 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:33,414 INFO L93 Difference]: Finished difference Result 2678 states and 4192 transitions. [2022-11-20 11:16:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:33,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-20 11:16:33,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:33,429 INFO L225 Difference]: With dead ends: 2678 [2022-11-20 11:16:33,429 INFO L226 Difference]: Without dead ends: 2556 [2022-11-20 11:16:33,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:33,432 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1508 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:33,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1695 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:33,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-11-20 11:16:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2552. [2022-11-20 11:16:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5635294117647058) internal successors, (3987), 2551 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3987 transitions. [2022-11-20 11:16:33,551 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3987 transitions. Word has length 92 [2022-11-20 11:16:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:33,556 INFO L495 AbstractCegarLoop]: Abstraction has 2552 states and 3987 transitions. [2022-11-20 11:16:33,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3987 transitions. [2022-11-20 11:16:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:16:33,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:33,558 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] [2022-11-20 11:16:33,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:16:33,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash 618113467, now seen corresponding path program 1 times [2022-11-20 11:16:33,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:33,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617985368] [2022-11-20 11:16:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:34,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:34,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617985368] [2022-11-20 11:16:34,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617985368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:34,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:34,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:16:34,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511600306] [2022-11-20 11:16:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:34,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:16:34,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:34,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:16:34,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:16:34,347 INFO L87 Difference]: Start difference. First operand 2552 states and 3987 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:35,028 INFO L93 Difference]: Finished difference Result 2783 states and 4355 transitions. [2022-11-20 11:16:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:16:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-20 11:16:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:35,039 INFO L225 Difference]: With dead ends: 2783 [2022-11-20 11:16:35,039 INFO L226 Difference]: Without dead ends: 2554 [2022-11-20 11:16:35,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:16:35,042 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6498 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6498 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:35,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6498 Valid, 2284 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:16:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-11-20 11:16:35,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2552. [2022-11-20 11:16:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5627450980392157) internal successors, (3985), 2551 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3985 transitions. [2022-11-20 11:16:35,148 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3985 transitions. Word has length 92 [2022-11-20 11:16:35,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:35,149 INFO L495 AbstractCegarLoop]: Abstraction has 2552 states and 3985 transitions. [2022-11-20 11:16:35,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3985 transitions. [2022-11-20 11:16:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 11:16:35,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:35,151 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] [2022-11-20 11:16:35,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:16:35,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1566925479, now seen corresponding path program 1 times [2022-11-20 11:16:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:35,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587752087] [2022-11-20 11:16:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:35,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:35,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587752087] [2022-11-20 11:16:35,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587752087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:35,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:35,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:16:35,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175860805] [2022-11-20 11:16:35,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:35,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:16:35,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:16:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:16:35,480 INFO L87 Difference]: Start difference. First operand 2552 states and 3985 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:35,667 INFO L93 Difference]: Finished difference Result 2777 states and 4339 transitions. [2022-11-20 11:16:35,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:16:35,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-20 11:16:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:35,678 INFO L225 Difference]: With dead ends: 2777 [2022-11-20 11:16:35,679 INFO L226 Difference]: Without dead ends: 2775 [2022-11-20 11:16:35,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:16:35,683 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 271 mSDsluCounter, 4820 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 6516 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:35,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 6516 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-11-20 11:16:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2558. [2022-11-20 11:16:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2558 states, 2556 states have (on average 1.5610328638497653) internal successors, (3990), 2557 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:35,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2558 states to 2558 states and 3990 transitions. [2022-11-20 11:16:35,817 INFO L78 Accepts]: Start accepts. Automaton has 2558 states and 3990 transitions. Word has length 93 [2022-11-20 11:16:35,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:35,817 INFO L495 AbstractCegarLoop]: Abstraction has 2558 states and 3990 transitions. [2022-11-20 11:16:35,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2558 states and 3990 transitions. [2022-11-20 11:16:35,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:16:35,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:35,820 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] [2022-11-20 11:16:35,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:16:35,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:35,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:35,821 INFO L85 PathProgramCache]: Analyzing trace with hash -401487589, now seen corresponding path program 1 times [2022-11-20 11:16:35,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:35,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614349518] [2022-11-20 11:16:35,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:35,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:35,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:35,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614349518] [2022-11-20 11:16:35,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614349518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:35,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:35,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:35,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762934538] [2022-11-20 11:16:35,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:35,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:35,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:35,955 INFO L87 Difference]: Start difference. First operand 2558 states and 3990 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:36,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:36,160 INFO L93 Difference]: Finished difference Result 3012 states and 4702 transitions. [2022-11-20 11:16:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:36,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:16:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:36,171 INFO L225 Difference]: With dead ends: 3012 [2022-11-20 11:16:36,171 INFO L226 Difference]: Without dead ends: 2777 [2022-11-20 11:16:36,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:36,175 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 1527 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:36,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1788 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:36,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2022-11-20 11:16:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2775. [2022-11-20 11:16:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2773 states have (on average 1.560403894698882) internal successors, (4327), 2774 states have internal predecessors, (4327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4327 transitions. [2022-11-20 11:16:36,330 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4327 transitions. Word has length 94 [2022-11-20 11:16:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:36,331 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4327 transitions. [2022-11-20 11:16:36,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:36,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4327 transitions. [2022-11-20 11:16:36,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:16:36,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:36,333 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] [2022-11-20 11:16:36,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:16:36,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1540581915, now seen corresponding path program 1 times [2022-11-20 11:16:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:36,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576354811] [2022-11-20 11:16:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:36,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:36,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:36,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576354811] [2022-11-20 11:16:36,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576354811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:36,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:36,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:36,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971801715] [2022-11-20 11:16:36,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:36,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:36,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:36,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:36,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:36,451 INFO L87 Difference]: Start difference. First operand 2775 states and 4327 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:36,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:36,695 INFO L93 Difference]: Finished difference Result 3647 states and 5685 transitions. [2022-11-20 11:16:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:36,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:16:36,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:36,709 INFO L225 Difference]: With dead ends: 3647 [2022-11-20 11:16:36,709 INFO L226 Difference]: Without dead ends: 3195 [2022-11-20 11:16:36,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:36,714 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1525 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:36,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1790 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2022-11-20 11:16:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3193. [2022-11-20 11:16:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3193 states, 3191 states have (on average 1.5571921027890943) internal successors, (4969), 3192 states have internal predecessors, (4969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 4969 transitions. [2022-11-20 11:16:36,969 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 4969 transitions. Word has length 94 [2022-11-20 11:16:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:36,970 INFO L495 AbstractCegarLoop]: Abstraction has 3193 states and 4969 transitions. [2022-11-20 11:16:36,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:36,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 4969 transitions. [2022-11-20 11:16:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:16:36,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:36,973 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] [2022-11-20 11:16:36,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:16:36,974 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1967352859, now seen corresponding path program 1 times [2022-11-20 11:16:36,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:36,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101729397] [2022-11-20 11:16:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:37,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:37,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101729397] [2022-11-20 11:16:37,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101729397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:37,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:37,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:37,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595521272] [2022-11-20 11:16:37,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:37,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:37,086 INFO L87 Difference]: Start difference. First operand 3193 states and 4969 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:37,501 INFO L93 Difference]: Finished difference Result 4869 states and 7555 transitions. [2022-11-20 11:16:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:16:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:37,532 INFO L225 Difference]: With dead ends: 4869 [2022-11-20 11:16:37,540 INFO L226 Difference]: Without dead ends: 3999 [2022-11-20 11:16:37,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:37,543 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1521 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:37,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1786 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2022-11-20 11:16:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3997. [2022-11-20 11:16:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 3995 states have (on average 1.5491864831038797) internal successors, (6189), 3996 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6189 transitions. [2022-11-20 11:16:38,014 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6189 transitions. Word has length 94 [2022-11-20 11:16:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:38,014 INFO L495 AbstractCegarLoop]: Abstraction has 3997 states and 6189 transitions. [2022-11-20 11:16:38,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6189 transitions. [2022-11-20 11:16:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:16:38,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:38,017 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] [2022-11-20 11:16:38,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:16:38,018 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:38,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1089352421, now seen corresponding path program 1 times [2022-11-20 11:16:38,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:38,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906016779] [2022-11-20 11:16:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:38,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:38,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:38,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906016779] [2022-11-20 11:16:38,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906016779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:38,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:38,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:38,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448755858] [2022-11-20 11:16:38,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:38,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:38,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:38,139 INFO L87 Difference]: Start difference. First operand 3997 states and 6189 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:39,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:39,144 INFO L93 Difference]: Finished difference Result 7217 states and 11103 transitions. [2022-11-20 11:16:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:39,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:16:39,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:39,164 INFO L225 Difference]: With dead ends: 7217 [2022-11-20 11:16:39,164 INFO L226 Difference]: Without dead ends: 5543 [2022-11-20 11:16:39,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:39,169 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1519 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:39,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1788 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:39,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5543 states. [2022-11-20 11:16:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5543 to 5541. [2022-11-20 11:16:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 5539 states have (on average 1.5347535656255642) internal successors, (8501), 5540 states have internal predecessors, (8501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 8501 transitions. [2022-11-20 11:16:40,020 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 8501 transitions. Word has length 94 [2022-11-20 11:16:40,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:40,020 INFO L495 AbstractCegarLoop]: Abstraction has 5541 states and 8501 transitions. [2022-11-20 11:16:40,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:40,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 8501 transitions. [2022-11-20 11:16:40,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:16:40,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:40,084 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] [2022-11-20 11:16:40,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:16:40,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:40,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1523888357, now seen corresponding path program 1 times [2022-11-20 11:16:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:40,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098719984] [2022-11-20 11:16:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:40,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:40,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098719984] [2022-11-20 11:16:40,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098719984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:40,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:40,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:40,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243623240] [2022-11-20 11:16:40,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:40,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:40,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:40,181 INFO L87 Difference]: Start difference. First operand 5541 states and 8501 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:41,677 INFO L93 Difference]: Finished difference Result 11721 states and 17815 transitions. [2022-11-20 11:16:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:16:41,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:41,697 INFO L225 Difference]: With dead ends: 11721 [2022-11-20 11:16:41,697 INFO L226 Difference]: Without dead ends: 8503 [2022-11-20 11:16:41,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:41,704 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 1515 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:41,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1784 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8503 states. [2022-11-20 11:16:42,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8503 to 8501. [2022-11-20 11:16:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8501 states, 8499 states have (on average 1.5141781386045416) internal successors, (12869), 8500 states have internal predecessors, (12869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8501 states to 8501 states and 12869 transitions. [2022-11-20 11:16:42,880 INFO L78 Accepts]: Start accepts. Automaton has 8501 states and 12869 transitions. Word has length 94 [2022-11-20 11:16:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:42,881 INFO L495 AbstractCegarLoop]: Abstraction has 8501 states and 12869 transitions. [2022-11-20 11:16:42,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 8501 states and 12869 transitions. [2022-11-20 11:16:42,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:16:42,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:42,883 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] [2022-11-20 11:16:42,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:16:42,884 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash 990146075, now seen corresponding path program 1 times [2022-11-20 11:16:42,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:42,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250089336] [2022-11-20 11:16:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:42,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:42,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:42,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250089336] [2022-11-20 11:16:42,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250089336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:42,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:42,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:42,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852298499] [2022-11-20 11:16:42,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:42,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:42,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:42,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:42,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:42,991 INFO L87 Difference]: Start difference. First operand 8501 states and 12869 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:45,248 INFO L93 Difference]: Finished difference Result 20345 states and 30471 transitions. [2022-11-20 11:16:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:45,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:16:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:45,285 INFO L225 Difference]: With dead ends: 20345 [2022-11-20 11:16:45,285 INFO L226 Difference]: Without dead ends: 14167 [2022-11-20 11:16:45,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:45,297 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1517 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:45,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1790 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14167 states. [2022-11-20 11:16:47,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14167 to 14165. [2022-11-20 11:16:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14165 states, 14163 states have (on average 1.4893031137470876) internal successors, (21093), 14164 states have internal predecessors, (21093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14165 states to 14165 states and 21093 transitions. [2022-11-20 11:16:47,530 INFO L78 Accepts]: Start accepts. Automaton has 14165 states and 21093 transitions. Word has length 94 [2022-11-20 11:16:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:47,531 INFO L495 AbstractCegarLoop]: Abstraction has 14165 states and 21093 transitions. [2022-11-20 11:16:47,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 14165 states and 21093 transitions. [2022-11-20 11:16:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:16:47,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:47,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:47,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:16:47,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1703496475, now seen corresponding path program 1 times [2022-11-20 11:16:47,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:47,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692511055] [2022-11-20 11:16:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:47,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:47,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692511055] [2022-11-20 11:16:47,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692511055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:47,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:47,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655699946] [2022-11-20 11:16:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:47,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:47,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:47,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:47,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:47,656 INFO L87 Difference]: Start difference. First operand 14165 states and 21093 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:51,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:51,325 INFO L93 Difference]: Finished difference Result 36825 states and 54247 transitions. [2022-11-20 11:16:51,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:16:51,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:16:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:51,391 INFO L225 Difference]: With dead ends: 36825 [2022-11-20 11:16:51,391 INFO L226 Difference]: Without dead ends: 24983 [2022-11-20 11:16:51,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:51,407 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1523 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:51,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1792 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24983 states. [2022-11-20 11:16:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24983 to 24981. [2022-11-20 11:16:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24981 states, 24979 states have (on average 1.4619080027222868) internal successors, (36517), 24980 states have internal predecessors, (36517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24981 states to 24981 states and 36517 transitions. [2022-11-20 11:16:55,915 INFO L78 Accepts]: Start accepts. Automaton has 24981 states and 36517 transitions. Word has length 94 [2022-11-20 11:16:55,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:55,916 INFO L495 AbstractCegarLoop]: Abstraction has 24981 states and 36517 transitions. [2022-11-20 11:16:55,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:55,916 INFO L276 IsEmpty]: Start isEmpty. Operand 24981 states and 36517 transitions. [2022-11-20 11:16:55,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-20 11:16:55,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:55,918 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] [2022-11-20 11:16:55,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:16:55,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:16:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:55,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1087415530, now seen corresponding path program 1 times [2022-11-20 11:16:55,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:55,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079723294] [2022-11-20 11:16:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:55,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:16:56,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:56,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079723294] [2022-11-20 11:16:56,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079723294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:56,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:56,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:16:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381983886] [2022-11-20 11:16:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:56,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:16:56,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:16:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:16:56,007 INFO L87 Difference]: Start difference. First operand 24981 states and 36517 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:01,624 INFO L93 Difference]: Finished difference Result 48540 states and 71083 transitions. [2022-11-20 11:17:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:17:01,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-11-20 11:17:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:01,716 INFO L225 Difference]: With dead ends: 48540 [2022-11-20 11:17:01,717 INFO L226 Difference]: Without dead ends: 35993 [2022-11-20 11:17:01,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:17:01,742 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 1526 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:01,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:17:01,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35993 states. [2022-11-20 11:17:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35993 to 35991. [2022-11-20 11:17:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35991 states, 35989 states have (on average 1.4521937258606796) internal successors, (52263), 35990 states have internal predecessors, (52263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35991 states to 35991 states and 52263 transitions. [2022-11-20 11:17:08,338 INFO L78 Accepts]: Start accepts. Automaton has 35991 states and 52263 transitions. Word has length 96 [2022-11-20 11:17:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:08,338 INFO L495 AbstractCegarLoop]: Abstraction has 35991 states and 52263 transitions. [2022-11-20 11:17:08,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:17:08,339 INFO L276 IsEmpty]: Start isEmpty. Operand 35991 states and 52263 transitions. [2022-11-20 11:17:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 11:17:08,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:08,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:08,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:17:08,350 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash 54573310, now seen corresponding path program 1 times [2022-11-20 11:17:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:08,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565816855] [2022-11-20 11:17:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:08,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:17:08,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:08,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565816855] [2022-11-20 11:17:08,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565816855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:08,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:08,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:17:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215763824] [2022-11-20 11:17:08,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:17:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:17:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:17:08,826 INFO L87 Difference]: Start difference. First operand 35991 states and 52263 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)