./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8 --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 e29377f4baeda9218a5143db9b1b65013d04e81e8a7c4a939c9d7d6e34d7d24c --- 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-2329fc7 [2022-12-13 15:57:51,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:57:51,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:57:51,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:57:51,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:57:51,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:57:51,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:57:51,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:57:51,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:57:51,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:57:51,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:57:51,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:57:51,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:57:51,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:57:51,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:57:51,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:57:51,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:57:51,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:57:51,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:57:51,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:57:51,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:57:51,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:57:51,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:57:51,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:57:51,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:57:51,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:57:51,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:57:51,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:57:51,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:57:51,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:57:51,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:57:51,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:57:51,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:57:51,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:57:51,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:57:51,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:57:51,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:57:51,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:57:51,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:57:51,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:57:51,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:57:51,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:57:51,417 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:57:51,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:57:51,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:57:51,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:57:51,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:57:51,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:57:51,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:57:51,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:57:51,420 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:57:51,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:57:51,420 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:57:51,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:57:51,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:57:51,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:57:51,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:57:51,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:57:51,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:57:51,421 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:57:51,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:57:51,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:57:51,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:57:51,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:57:51,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:57:51,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:57:51,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:57:51,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:57:51,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:57:51,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:57:51,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:57:51,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:57:51,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:57:51,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:57:51,423 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:57:51,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:57:51,424 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:57:51,424 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29377f4baeda9218a5143db9b1b65013d04e81e8a7c4a939c9d7d6e34d7d24c [2022-12-13 15:57:51,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:57:51,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:57:51,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:57:51,634 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:57:51,634 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:57:51,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label04.c [2022-12-13 15:57:54,220 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:57:54,615 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:57:54,615 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label04.c [2022-12-13 15:57:54,640 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/data/4d86dfc02/99abf3230a2d454b8c214ceabe01d394/FLAGd3ea3b777 [2022-12-13 15:57:54,654 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/data/4d86dfc02/99abf3230a2d454b8c214ceabe01d394 [2022-12-13 15:57:54,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:57:54,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:57:54,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:57:54,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:57:54,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:57:54,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:57:54" (1/1) ... [2022-12-13 15:57:54,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c2ea88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:54, skipping insertion in model container [2022-12-13 15:57:54,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:57:54" (1/1) ... [2022-12-13 15:57:54,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:57:54,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:57:55,022 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_78350521-6fee-40b6-a162-0fcc15ff875e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label04.c[20426,20439] [2022-12-13 15:57:55,058 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_78350521-6fee-40b6-a162-0fcc15ff875e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label04.c[27487,27500] [2022-12-13 15:57:55,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:57:55,605 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:57:55,631 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_78350521-6fee-40b6-a162-0fcc15ff875e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label04.c[20426,20439] [2022-12-13 15:57:55,639 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_78350521-6fee-40b6-a162-0fcc15ff875e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label04.c[27487,27500] [2022-12-13 15:57:55,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:57:55,998 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:57:55,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55 WrapperNode [2022-12-13 15:57:55,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:57:55,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:57:55,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:57:55,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:57:56,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,267 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5182 [2022-12-13 15:57:56,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:57:56,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:57:56,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:57:56,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:57:56,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,516 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:57:56,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:57:56,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:57:56,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:57:56,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (1/1) ... [2022-12-13 15:57:56,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:57:56,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:57:56,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:57:56,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:57:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:57:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:57:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:57:56,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:57:56,722 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:57:56,724 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:58:00,268 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:58:00,281 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:58:00,281 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:58:00,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:58:00 BoogieIcfgContainer [2022-12-13 15:58:00,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:58:00,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:58:00,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:58:00,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:58:00,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:57:54" (1/3) ... [2022-12-13 15:58:00,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644eafbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:58:00, skipping insertion in model container [2022-12-13 15:58:00,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:55" (2/3) ... [2022-12-13 15:58:00,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644eafbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:58:00, skipping insertion in model container [2022-12-13 15:58:00,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:58:00" (3/3) ... [2022-12-13 15:58:00,289 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals+Problem12_label04.c [2022-12-13 15:58:00,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:58:00,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 15:58:00,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:58:00,357 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;@6309b10c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:58:00,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 15:58:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 930 states, 927 states have (on average 1.9039913700107876) internal successors, (1765), 929 states have internal predecessors, (1765), 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) [2022-12-13 15:58:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 15:58:00,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:00,372 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] [2022-12-13 15:58:00,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:00,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 495960789, now seen corresponding path program 1 times [2022-12-13 15:58:00,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:00,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200054850] [2022-12-13 15:58:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:00,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:00,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200054850] [2022-12-13 15:58:00,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200054850] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:00,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:00,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:58:00,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537440072] [2022-12-13 15:58:00,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:00,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:58:00,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:00,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:58:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:58:00,608 INFO L87 Difference]: Start difference. First operand has 930 states, 927 states have (on average 1.9039913700107876) internal successors, (1765), 929 states have internal predecessors, (1765), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-12-13 15:58:00,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:00,684 INFO L93 Difference]: Finished difference Result 1804 states and 3422 transitions. [2022-12-13 15:58:00,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:58:00,686 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2022-12-13 15:58:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:00,702 INFO L225 Difference]: With dead ends: 1804 [2022-12-13 15:58:00,702 INFO L226 Difference]: Without dead ends: 864 [2022-12-13 15:58:00,708 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 [2022-12-13 15:58:00,711 INFO L413 NwaCegarLoop]: 1699 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, 1699 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 [2022-12-13 15:58:00,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-12-13 15:58:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2022-12-13 15:58:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.8932714617169373) internal successors, (1632), 863 states have internal predecessors, (1632), 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) [2022-12-13 15:58:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1632 transitions. [2022-12-13 15:58:00,774 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1632 transitions. Word has length 28 [2022-12-13 15:58:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:00,774 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1632 transitions. [2022-12-13 15:58:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-12-13 15:58:00,774 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1632 transitions. [2022-12-13 15:58:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 15:58:00,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:00,776 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] [2022-12-13 15:58:00,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:58:00,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:00,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash 714815507, now seen corresponding path program 1 times [2022-12-13 15:58:00,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:00,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789782664] [2022-12-13 15:58:00,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:00,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:00,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:00,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789782664] [2022-12-13 15:58:00,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789782664] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:00,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:00,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:58:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78386500] [2022-12-13 15:58:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:00,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:58:00,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:58:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:58:00,958 INFO L87 Difference]: Start difference. First operand 864 states and 1632 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-12-13 15:58:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:01,101 INFO L93 Difference]: Finished difference Result 922 states and 1723 transitions. [2022-12-13 15:58:01,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:58:01,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2022-12-13 15:58:01,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:01,106 INFO L225 Difference]: With dead ends: 922 [2022-12-13 15:58:01,106 INFO L226 Difference]: Without dead ends: 864 [2022-12-13 15:58:01,107 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 [2022-12-13 15:58:01,108 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 3 mSDsluCounter, 4837 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:01,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6467 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:58:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-12-13 15:58:01,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2022-12-13 15:58:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.8352668213457077) internal successors, (1582), 863 states have internal predecessors, (1582), 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) [2022-12-13 15:58:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1582 transitions. [2022-12-13 15:58:01,134 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1582 transitions. Word has length 28 [2022-12-13 15:58:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:01,135 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1582 transitions. [2022-12-13 15:58:01,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-12-13 15:58:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1582 transitions. [2022-12-13 15:58:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 15:58:01,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:01,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:01,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:58:01,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:01,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1649090824, now seen corresponding path program 1 times [2022-12-13 15:58:01,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:01,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316640457] [2022-12-13 15:58:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:01,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:01,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316640457] [2022-12-13 15:58:01,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316640457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:01,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:01,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:58:01,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908891864] [2022-12-13 15:58:01,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:01,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:01,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:01,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:01,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:01,237 INFO L87 Difference]: Start difference. First operand 864 states and 1582 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2022-12-13 15:58:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:04,521 INFO L93 Difference]: Finished difference Result 2368 states and 4455 transitions. [2022-12-13 15:58:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:04,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2022-12-13 15:58:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:04,531 INFO L225 Difference]: With dead ends: 2368 [2022-12-13 15:58:04,531 INFO L226 Difference]: Without dead ends: 1615 [2022-12-13 15:58:04,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:04,534 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 883 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:04,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 618 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 15:58:04,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2022-12-13 15:58:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1615. [2022-12-13 15:58:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.5877247365158091) internal successors, (2561), 1614 states have internal predecessors, (2561), 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) [2022-12-13 15:58:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2561 transitions. [2022-12-13 15:58:04,566 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2561 transitions. Word has length 61 [2022-12-13 15:58:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:04,566 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2561 transitions. [2022-12-13 15:58:04,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2022-12-13 15:58:04,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2561 transitions. [2022-12-13 15:58:04,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 15:58:04,568 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:04,568 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] [2022-12-13 15:58:04,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:58:04,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:04,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash -585081934, now seen corresponding path program 1 times [2022-12-13 15:58:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:04,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885266883] [2022-12-13 15:58:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:04,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:04,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885266883] [2022-12-13 15:58:04,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885266883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:04,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:04,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:58:04,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215883960] [2022-12-13 15:58:04,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:04,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:58:04,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:04,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:58:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:58:04,735 INFO L87 Difference]: Start difference. First operand 1615 states and 2561 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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) [2022-12-13 15:58:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:05,148 INFO L93 Difference]: Finished difference Result 2371 states and 3779 transitions. [2022-12-13 15:58:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:58:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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 77 [2022-12-13 15:58:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:05,157 INFO L225 Difference]: With dead ends: 2371 [2022-12-13 15:58:05,157 INFO L226 Difference]: Without dead ends: 2317 [2022-12-13 15:58:05,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 15:58:05,159 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 11503 mSDsluCounter, 3556 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11503 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:05,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11503 Valid, 5134 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:58:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2022-12-13 15:58:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 1667. [2022-12-13 15:58:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1665 states have (on average 1.5885885885885886) internal successors, (2645), 1666 states have internal predecessors, (2645), 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) [2022-12-13 15:58:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2645 transitions. [2022-12-13 15:58:05,207 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2645 transitions. Word has length 77 [2022-12-13 15:58:05,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:05,208 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2645 transitions. [2022-12-13 15:58:05,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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) [2022-12-13 15:58:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2645 transitions. [2022-12-13 15:58:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 15:58:05,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:05,210 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] [2022-12-13 15:58:05,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:58:05,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:05,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:05,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1038714270, now seen corresponding path program 1 times [2022-12-13 15:58:05,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:05,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8865927] [2022-12-13 15:58:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:05,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:05,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:05,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8865927] [2022-12-13 15:58:05,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8865927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:05,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:05,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:05,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211184898] [2022-12-13 15:58:05,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:05,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:05,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:05,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:05,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:05,282 INFO L87 Difference]: Start difference. First operand 1667 states and 2645 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-12-13 15:58:05,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:05,331 INFO L93 Difference]: Finished difference Result 1868 states and 2968 transitions. [2022-12-13 15:58:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:05,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-12-13 15:58:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:05,338 INFO L225 Difference]: With dead ends: 1868 [2022-12-13 15:58:05,338 INFO L226 Difference]: Without dead ends: 1762 [2022-12-13 15:58:05,339 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 [2022-12-13 15:58:05,340 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 1498 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:05,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:05,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2022-12-13 15:58:05,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1760. [2022-12-13 15:58:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1758 states have (on average 1.5887372013651877) internal successors, (2793), 1759 states have internal predecessors, (2793), 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) [2022-12-13 15:58:05,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2793 transitions. [2022-12-13 15:58:05,378 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2793 transitions. Word has length 79 [2022-12-13 15:58:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:05,378 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 2793 transitions. [2022-12-13 15:58:05,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-12-13 15:58:05,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2793 transitions. [2022-12-13 15:58:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 15:58:05,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:05,379 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] [2022-12-13 15:58:05,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:58:05,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:05,380 INFO L85 PathProgramCache]: Analyzing trace with hash -972220758, now seen corresponding path program 1 times [2022-12-13 15:58:05,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:05,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19270570] [2022-12-13 15:58:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:05,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:05,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:05,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19270570] [2022-12-13 15:58:05,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19270570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:05,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:05,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:58:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636573088] [2022-12-13 15:58:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:05,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:58:05,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:05,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:58:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:58:05,653 INFO L87 Difference]: Start difference. First operand 1760 states and 2793 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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) [2022-12-13 15:58:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:05,915 INFO L93 Difference]: Finished difference Result 1961 states and 3113 transitions. [2022-12-13 15:58:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:58:05,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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 79 [2022-12-13 15:58:05,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:05,920 INFO L225 Difference]: With dead ends: 1961 [2022-12-13 15:58:05,920 INFO L226 Difference]: Without dead ends: 1762 [2022-12-13 15:58:05,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:58:05,921 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 3058 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:05,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3058 Valid, 2092 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:58:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2022-12-13 15:58:05,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1760. [2022-12-13 15:58:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1758 states have (on average 1.587599544937429) internal successors, (2791), 1759 states have internal predecessors, (2791), 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) [2022-12-13 15:58:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2791 transitions. [2022-12-13 15:58:05,954 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2791 transitions. Word has length 79 [2022-12-13 15:58:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:05,954 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 2791 transitions. [2022-12-13 15:58:05,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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) [2022-12-13 15:58:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2791 transitions. [2022-12-13 15:58:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 15:58:05,955 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:05,955 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] [2022-12-13 15:58:05,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:58:05,956 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash -488795339, now seen corresponding path program 1 times [2022-12-13 15:58:05,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:05,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993164555] [2022-12-13 15:58:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:05,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:06,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:06,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993164555] [2022-12-13 15:58:06,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993164555] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:06,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:06,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 15:58:06,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764121994] [2022-12-13 15:58:06,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:06,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:58:06,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:58:06,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:58:06,179 INFO L87 Difference]: Start difference. First operand 1760 states and 2791 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2022-12-13 15:58:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:06,324 INFO L93 Difference]: Finished difference Result 1956 states and 3098 transitions. [2022-12-13 15:58:06,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:58:06,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 80 [2022-12-13 15:58:06,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:06,328 INFO L225 Difference]: With dead ends: 1956 [2022-12-13 15:58:06,329 INFO L226 Difference]: Without dead ends: 1954 [2022-12-13 15:58:06,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:58:06,330 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 514 mSDsluCounter, 9209 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 10866 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:06,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 10866 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-12-13 15:58:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1766. [2022-12-13 15:58:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1764 states have (on average 1.5850340136054422) internal successors, (2796), 1765 states have internal predecessors, (2796), 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) [2022-12-13 15:58:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 2796 transitions. [2022-12-13 15:58:06,368 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 2796 transitions. Word has length 80 [2022-12-13 15:58:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:06,368 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 2796 transitions. [2022-12-13 15:58:06,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2022-12-13 15:58:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 2796 transitions. [2022-12-13 15:58:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:58:06,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:06,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:06,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:58:06,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash 295676394, now seen corresponding path program 1 times [2022-12-13 15:58:06,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:06,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498277296] [2022-12-13 15:58:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:06,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:06,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:06,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498277296] [2022-12-13 15:58:06,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498277296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:06,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:06,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:06,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145235522] [2022-12-13 15:58:06,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:06,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:06,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:06,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:06,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:06,416 INFO L87 Difference]: Start difference. First operand 1766 states and 2796 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:06,457 INFO L93 Difference]: Finished difference Result 1984 states and 3137 transitions. [2022-12-13 15:58:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:06,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-12-13 15:58:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:06,461 INFO L225 Difference]: With dead ends: 1984 [2022-12-13 15:58:06,461 INFO L226 Difference]: Without dead ends: 1872 [2022-12-13 15:58:06,462 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 [2022-12-13 15:58:06,463 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1742 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 [2022-12-13 15:58:06,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1742 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2022-12-13 15:58:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1870. [2022-12-13 15:58:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1868 states have (on average 1.5829764453961457) internal successors, (2957), 1869 states have internal predecessors, (2957), 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) [2022-12-13 15:58:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2957 transitions. [2022-12-13 15:58:06,509 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2957 transitions. Word has length 81 [2022-12-13 15:58:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:06,510 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 2957 transitions. [2022-12-13 15:58:06,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2957 transitions. [2022-12-13 15:58:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:58:06,511 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:06,511 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] [2022-12-13 15:58:06,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:58:06,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:06,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:06,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2057221398, now seen corresponding path program 1 times [2022-12-13 15:58:06,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:06,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055138622] [2022-12-13 15:58:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:06,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:06,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:06,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055138622] [2022-12-13 15:58:06,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055138622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:06,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:06,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:06,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085041620] [2022-12-13 15:58:06,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:06,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:06,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:06,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:06,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:06,555 INFO L87 Difference]: Start difference. First operand 1870 states and 2957 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:06,619 INFO L93 Difference]: Finished difference Result 2460 states and 3877 transitions. [2022-12-13 15:58:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:06,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-12-13 15:58:06,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:06,623 INFO L225 Difference]: With dead ends: 2460 [2022-12-13 15:58:06,624 INFO L226 Difference]: Without dead ends: 2153 [2022-12-13 15:58:06,625 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 [2022-12-13 15:58:06,625 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 1514 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1748 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 [2022-12-13 15:58:06,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:06,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2022-12-13 15:58:06,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2151. [2022-12-13 15:58:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2149 states have (on average 1.577012563983248) internal successors, (3389), 2150 states have internal predecessors, (3389), 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) [2022-12-13 15:58:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3389 transitions. [2022-12-13 15:58:06,697 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3389 transitions. Word has length 81 [2022-12-13 15:58:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:06,697 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3389 transitions. [2022-12-13 15:58:06,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:06,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3389 transitions. [2022-12-13 15:58:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:58:06,698 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:06,698 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] [2022-12-13 15:58:06,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:58:06,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:06,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:06,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1894306838, now seen corresponding path program 1 times [2022-12-13 15:58:06,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:06,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114509548] [2022-12-13 15:58:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:06,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:06,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:06,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114509548] [2022-12-13 15:58:06,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114509548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:06,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:06,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:06,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663704429] [2022-12-13 15:58:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:06,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:06,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:06,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:06,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:06,740 INFO L87 Difference]: Start difference. First operand 2151 states and 3389 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:06,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:06,875 INFO L93 Difference]: Finished difference Result 3279 states and 5131 transitions. [2022-12-13 15:58:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:06,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-12-13 15:58:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:06,881 INFO L225 Difference]: With dead ends: 3279 [2022-12-13 15:58:06,881 INFO L226 Difference]: Without dead ends: 2691 [2022-12-13 15:58:06,882 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 [2022-12-13 15:58:06,883 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1512 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1750 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 [2022-12-13 15:58:06,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1750 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:06,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2022-12-13 15:58:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2689. [2022-12-13 15:58:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2689 states, 2687 states have (on average 1.5649423148492743) internal successors, (4205), 2688 states have internal predecessors, (4205), 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) [2022-12-13 15:58:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 4205 transitions. [2022-12-13 15:58:06,996 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 4205 transitions. Word has length 81 [2022-12-13 15:58:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:06,996 INFO L495 AbstractCegarLoop]: Abstraction has 2689 states and 4205 transitions. [2022-12-13 15:58:06,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 4205 transitions. [2022-12-13 15:58:06,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:58:06,997 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:06,997 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] [2022-12-13 15:58:06,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:58:06,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:06,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1630450454, now seen corresponding path program 1 times [2022-12-13 15:58:06,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:06,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374800318] [2022-12-13 15:58:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:07,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:07,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374800318] [2022-12-13 15:58:07,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374800318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:07,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:07,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:07,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073148938] [2022-12-13 15:58:07,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:07,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:07,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:07,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:07,041 INFO L87 Difference]: Start difference. First operand 2689 states and 4205 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:07,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:07,310 INFO L93 Difference]: Finished difference Result 4845 states and 7495 transitions. [2022-12-13 15:58:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:07,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-12-13 15:58:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:07,321 INFO L225 Difference]: With dead ends: 4845 [2022-12-13 15:58:07,321 INFO L226 Difference]: Without dead ends: 3719 [2022-12-13 15:58:07,323 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 [2022-12-13 15:58:07,324 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 1510 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1752 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 [2022-12-13 15:58:07,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1752 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:07,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2022-12-13 15:58:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3717. [2022-12-13 15:58:07,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3717 states, 3715 states have (on average 1.5453566621803498) internal successors, (5741), 3716 states have internal predecessors, (5741), 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) [2022-12-13 15:58:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5741 transitions. [2022-12-13 15:58:07,542 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5741 transitions. Word has length 81 [2022-12-13 15:58:07,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:07,542 INFO L495 AbstractCegarLoop]: Abstraction has 3717 states and 5741 transitions. [2022-12-13 15:58:07,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5741 transitions. [2022-12-13 15:58:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:58:07,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:07,543 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] [2022-12-13 15:58:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:58:07,543 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1687310058, now seen corresponding path program 1 times [2022-12-13 15:58:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:07,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732336967] [2022-12-13 15:58:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:07,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:07,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732336967] [2022-12-13 15:58:07,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732336967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:07,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:07,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:07,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455016457] [2022-12-13 15:58:07,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:07,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:07,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:07,586 INFO L87 Difference]: Start difference. First operand 3717 states and 5741 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:07,953 INFO L93 Difference]: Finished difference Result 7833 states and 11935 transitions. [2022-12-13 15:58:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:07,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-12-13 15:58:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:07,969 INFO L225 Difference]: With dead ends: 7833 [2022-12-13 15:58:07,969 INFO L226 Difference]: Without dead ends: 5679 [2022-12-13 15:58:07,972 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 [2022-12-13 15:58:07,972 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1506 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1748 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 [2022-12-13 15:58:07,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:07,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2022-12-13 15:58:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 5677. [2022-12-13 15:58:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5675 states have (on average 1.5191189427312775) internal successors, (8621), 5676 states have internal predecessors, (8621), 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) [2022-12-13 15:58:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 8621 transitions. [2022-12-13 15:58:08,392 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 8621 transitions. Word has length 81 [2022-12-13 15:58:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:08,392 INFO L495 AbstractCegarLoop]: Abstraction has 5677 states and 8621 transitions. [2022-12-13 15:58:08,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 8621 transitions. [2022-12-13 15:58:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:58:08,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:08,393 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] [2022-12-13 15:58:08,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:58:08,394 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:08,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:08,394 INFO L85 PathProgramCache]: Analyzing trace with hash -826724374, now seen corresponding path program 1 times [2022-12-13 15:58:08,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:08,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724851151] [2022-12-13 15:58:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:08,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:08,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724851151] [2022-12-13 15:58:08,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724851151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:08,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:08,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192404090] [2022-12-13 15:58:08,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:08,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:08,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:08,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:08,443 INFO L87 Difference]: Start difference. First operand 5677 states and 8621 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:09,273 INFO L93 Difference]: Finished difference Result 13521 states and 20239 transitions. [2022-12-13 15:58:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:09,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-12-13 15:58:09,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:09,287 INFO L225 Difference]: With dead ends: 13521 [2022-12-13 15:58:09,287 INFO L226 Difference]: Without dead ends: 9407 [2022-12-13 15:58:09,290 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 [2022-12-13 15:58:09,291 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1504 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1750 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 [2022-12-13 15:58:09,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1750 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9407 states. [2022-12-13 15:58:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9407 to 9405. [2022-12-13 15:58:10,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9405 states, 9403 states have (on average 1.48856747846432) internal successors, (13997), 9404 states have internal predecessors, (13997), 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) [2022-12-13 15:58:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 13997 transitions. [2022-12-13 15:58:10,050 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 13997 transitions. Word has length 81 [2022-12-13 15:58:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:10,050 INFO L495 AbstractCegarLoop]: Abstraction has 9405 states and 13997 transitions. [2022-12-13 15:58:10,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 13997 transitions. [2022-12-13 15:58:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 15:58:10,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:10,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:10,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:58:10,051 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:10,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash -392188438, now seen corresponding path program 1 times [2022-12-13 15:58:10,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:10,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596526133] [2022-12-13 15:58:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:10,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:58:10,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:10,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596526133] [2022-12-13 15:58:10,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596526133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:10,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:10,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:10,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757645763] [2022-12-13 15:58:10,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:10,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:10,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:10,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:10,096 INFO L87 Difference]: Start difference. First operand 9405 states and 13997 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:11,612 INFO L93 Difference]: Finished difference Result 24321 states and 35695 transitions. [2022-12-13 15:58:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:11,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-12-13 15:58:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:11,635 INFO L225 Difference]: With dead ends: 24321 [2022-12-13 15:58:11,635 INFO L226 Difference]: Without dead ends: 16479 [2022-12-13 15:58:11,640 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 [2022-12-13 15:58:11,641 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1508 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1754 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 [2022-12-13 15:58:11,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1754 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:58:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16479 states. [2022-12-13 15:58:13,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16479 to 16477. [2022-12-13 15:58:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16477 states, 16475 states have (on average 1.4555993930197269) internal successors, (23981), 16476 states have internal predecessors, (23981), 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) [2022-12-13 15:58:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16477 states to 16477 states and 23981 transitions. [2022-12-13 15:58:13,318 INFO L78 Accepts]: Start accepts. Automaton has 16477 states and 23981 transitions. Word has length 81 [2022-12-13 15:58:13,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:13,318 INFO L495 AbstractCegarLoop]: Abstraction has 16477 states and 23981 transitions. [2022-12-13 15:58:13,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2022-12-13 15:58:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 16477 states and 23981 transitions. [2022-12-13 15:58:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:58:13,323 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:13,323 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:58:13,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:58:13,324 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash -730351122, now seen corresponding path program 1 times [2022-12-13 15:58:13,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:13,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858110410] [2022-12-13 15:58:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:13,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:58:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:13,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858110410] [2022-12-13 15:58:13,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858110410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:13,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:13,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:58:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146628662] [2022-12-13 15:58:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:13,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:58:13,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:13,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:58:13,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:58:13,466 INFO L87 Difference]: Start difference. First operand 16477 states and 23981 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2022-12-13 15:58:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:25,841 INFO L93 Difference]: Finished difference Result 119533 states and 172469 transitions. [2022-12-13 15:58:25,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:58:25,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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 104 [2022-12-13 15:58:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:26,001 INFO L225 Difference]: With dead ends: 119533 [2022-12-13 15:58:26,001 INFO L226 Difference]: Without dead ends: 109035 [2022-12-13 15:58:26,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:58:26,021 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 9868 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9868 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:26,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9868 Valid, 4656 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:58:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109035 states. [2022-12-13 15:58:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109035 to 29213. [2022-12-13 15:58:30,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29213 states, 29211 states have (on average 1.4431892095443497) internal successors, (42157), 29212 states have internal predecessors, (42157), 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) [2022-12-13 15:58:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29213 states to 29213 states and 42157 transitions. [2022-12-13 15:58:30,501 INFO L78 Accepts]: Start accepts. Automaton has 29213 states and 42157 transitions. Word has length 104 [2022-12-13 15:58:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:30,501 INFO L495 AbstractCegarLoop]: Abstraction has 29213 states and 42157 transitions. [2022-12-13 15:58:30,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2022-12-13 15:58:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 29213 states and 42157 transitions. [2022-12-13 15:58:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:58:30,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:30,505 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:58:30,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:58:30,505 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1211718382, now seen corresponding path program 1 times [2022-12-13 15:58:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:30,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636412724] [2022-12-13 15:58:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:30,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:58:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:30,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636412724] [2022-12-13 15:58:30,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636412724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:30,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:30,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:58:30,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658895327] [2022-12-13 15:58:30,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:30,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:58:30,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:58:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:58:30,641 INFO L87 Difference]: Start difference. First operand 29213 states and 42157 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 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) [2022-12-13 15:58:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:47,888 INFO L93 Difference]: Finished difference Result 134445 states and 193845 transitions. [2022-12-13 15:58:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:58:47,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 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 104 [2022-12-13 15:58:47,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:48,058 INFO L225 Difference]: With dead ends: 134445 [2022-12-13 15:58:48,058 INFO L226 Difference]: Without dead ends: 119531 [2022-12-13 15:58:48,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:58:48,082 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 9870 mSDsluCounter, 2944 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9870 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:48,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9870 Valid, 4611 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:58:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119531 states. [2022-12-13 15:58:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119531 to 49373. [2022-12-13 15:58:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49373 states, 49371 states have (on average 1.4359239229507201) internal successors, (70893), 49372 states have internal predecessors, (70893), 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) [2022-12-13 15:58:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49373 states to 49373 states and 70893 transitions. [2022-12-13 15:58:55,978 INFO L78 Accepts]: Start accepts. Automaton has 49373 states and 70893 transitions. Word has length 104 [2022-12-13 15:58:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:55,978 INFO L495 AbstractCegarLoop]: Abstraction has 49373 states and 70893 transitions. [2022-12-13 15:58:55,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 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) [2022-12-13 15:58:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 49373 states and 70893 transitions. [2022-12-13 15:58:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:58:55,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:55,983 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:58:55,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:58:55,984 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:55,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1374632942, now seen corresponding path program 1 times [2022-12-13 15:58:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:55,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083969330] [2022-12-13 15:58:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:55,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 15:58:56,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:56,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083969330] [2022-12-13 15:58:56,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083969330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:56,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:56,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:58:56,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134836155] [2022-12-13 15:58:56,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:56,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:58:56,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:58:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:58:56,117 INFO L87 Difference]: Start difference. First operand 49373 states and 70893 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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) [2022-12-13 15:59:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:59:17,825 INFO L93 Difference]: Finished difference Result 149357 states and 215157 transitions. [2022-12-13 15:59:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:59:17,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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 104 [2022-12-13 15:59:17,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:59:18,013 INFO L225 Difference]: With dead ends: 149357 [2022-12-13 15:59:18,013 INFO L226 Difference]: Without dead ends: 134443 [2022-12-13 15:59:18,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:59:18,042 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 9890 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9890 SdHoareTripleChecker+Valid, 4571 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:59:18,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9890 Valid, 4571 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:59:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134443 states. [2022-12-13 15:59:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134443 to 64285. [2022-12-13 15:59:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64285 states, 64283 states have (on average 1.434360561890391) internal successors, (92205), 64284 states have internal predecessors, (92205), 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) [2022-12-13 15:59:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64285 states to 64285 states and 92205 transitions. [2022-12-13 15:59:29,275 INFO L78 Accepts]: Start accepts. Automaton has 64285 states and 92205 transitions. Word has length 104 [2022-12-13 15:59:29,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:59:29,275 INFO L495 AbstractCegarLoop]: Abstraction has 64285 states and 92205 transitions. [2022-12-13 15:59:29,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 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) [2022-12-13 15:59:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 64285 states and 92205 transitions. [2022-12-13 15:59:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 15:59:29,281 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:59:29,281 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:59:29,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 15:59:29,281 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:59:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:59:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1638489326, now seen corresponding path program 1 times [2022-12-13 15:59:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:59:29,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115584345] [2022-12-13 15:59:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:29,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:59:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:59:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 15:59:29,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:59:29,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115584345] [2022-12-13 15:59:29,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115584345] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:59:29,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:59:29,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:59:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008558705] [2022-12-13 15:59:29,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:59:29,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:59:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:59:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:59:29,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:59:29,411 INFO L87 Difference]: Start difference. First operand 64285 states and 92205 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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) [2022-12-13 15:59:56,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:59:56,481 INFO L93 Difference]: Finished difference Result 164269 states and 236469 transitions. [2022-12-13 15:59:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:59:56,482 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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 104 [2022-12-13 15:59:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:59:56,678 INFO L225 Difference]: With dead ends: 164269 [2022-12-13 15:59:56,678 INFO L226 Difference]: Without dead ends: 149355 [2022-12-13 15:59:56,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:59:56,706 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 9982 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9982 SdHoareTripleChecker+Valid, 4486 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:59:56,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9982 Valid, 4486 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:59:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149355 states. [2022-12-13 16:00:11,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149355 to 79197. [2022-12-13 16:00:11,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79197 states, 79195 states have (on average 1.4333859460824547) internal successors, (113517), 79196 states have internal predecessors, (113517), 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) [2022-12-13 16:00:11,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79197 states to 79197 states and 113517 transitions. [2022-12-13 16:00:11,657 INFO L78 Accepts]: Start accepts. Automaton has 79197 states and 113517 transitions. Word has length 104 [2022-12-13 16:00:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:11,657 INFO L495 AbstractCegarLoop]: Abstraction has 79197 states and 113517 transitions. [2022-12-13 16:00:11,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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) [2022-12-13 16:00:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 79197 states and 113517 transitions. [2022-12-13 16:00:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:00:11,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:11,662 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:00:11,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:00:11,662 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:11,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:11,663 INFO L85 PathProgramCache]: Analyzing trace with hash 661282542, now seen corresponding path program 1 times [2022-12-13 16:00:11,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:11,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15697261] [2022-12-13 16:00:11,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:11,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:00:11,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:11,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15697261] [2022-12-13 16:00:11,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15697261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:11,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:11,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:00:11,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65458452] [2022-12-13 16:00:11,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:11,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:00:11,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:00:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:00:11,792 INFO L87 Difference]: Start difference. First operand 79197 states and 113517 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2022-12-13 16:00:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:44,615 INFO L93 Difference]: Finished difference Result 179181 states and 257781 transitions. [2022-12-13 16:00:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:00:44,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 104 [2022-12-13 16:00:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:44,825 INFO L225 Difference]: With dead ends: 179181 [2022-12-13 16:00:44,826 INFO L226 Difference]: Without dead ends: 164267 [2022-12-13 16:00:44,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:00:44,853 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 10067 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10067 SdHoareTripleChecker+Valid, 4526 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:44,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10067 Valid, 4526 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:00:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164267 states. [2022-12-13 16:01:04,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164267 to 94109. [2022-12-13 16:01:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94109 states, 94107 states have (on average 1.4327202014727916) internal successors, (134829), 94108 states have internal predecessors, (134829), 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) [2022-12-13 16:01:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94109 states to 94109 states and 134829 transitions. [2022-12-13 16:01:04,889 INFO L78 Accepts]: Start accepts. Automaton has 94109 states and 134829 transitions. Word has length 104 [2022-12-13 16:01:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:01:04,889 INFO L495 AbstractCegarLoop]: Abstraction has 94109 states and 134829 transitions. [2022-12-13 16:01:04,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2022-12-13 16:01:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 94109 states and 134829 transitions. [2022-12-13 16:01:04,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:01:04,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:01:04,895 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:01:04,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:01:04,895 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:01:04,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1852751890, now seen corresponding path program 1 times [2022-12-13 16:01:04,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:04,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214001465] [2022-12-13 16:01:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 16:01:05,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:05,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214001465] [2022-12-13 16:01:05,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214001465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:05,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:05,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:01:05,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825347290] [2022-12-13 16:01:05,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:05,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:01:05,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:01:05,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:01:05,021 INFO L87 Difference]: Start difference. First operand 94109 states and 134829 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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) [2022-12-13 16:01:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:43,336 INFO L93 Difference]: Finished difference Result 194093 states and 279093 transitions. [2022-12-13 16:01:43,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:01:43,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 104 [2022-12-13 16:01:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:43,577 INFO L225 Difference]: With dead ends: 194093 [2022-12-13 16:01:43,578 INFO L226 Difference]: Without dead ends: 179179 [2022-12-13 16:01:43,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:01:43,608 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9932 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9932 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:43,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9932 Valid, 4578 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:01:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179179 states. [2022-12-13 16:02:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179179 to 109021. [2022-12-13 16:02:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109021 states, 109019 states have (on average 1.4322365826140397) internal successors, (156141), 109020 states have internal predecessors, (156141), 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) [2022-12-13 16:02:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109021 states to 109021 states and 156141 transitions. [2022-12-13 16:02:07,092 INFO L78 Accepts]: Start accepts. Automaton has 109021 states and 156141 transitions. Word has length 104 [2022-12-13 16:02:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:07,093 INFO L495 AbstractCegarLoop]: Abstraction has 109021 states and 156141 transitions. [2022-12-13 16:02:07,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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) [2022-12-13 16:02:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand 109021 states and 156141 transitions. [2022-12-13 16:02:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 16:02:07,098 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:07,098 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:02:07,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:02:07,098 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:07,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:07,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1418215954, now seen corresponding path program 1 times [2022-12-13 16:02:07,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:07,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628232522] [2022-12-13 16:02:07,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:07,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:02:07,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:07,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628232522] [2022-12-13 16:02:07,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628232522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:07,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:07,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:02:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62401082] [2022-12-13 16:02:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:07,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:02:07,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:07,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:02:07,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:02:07,223 INFO L87 Difference]: Start difference. First operand 109021 states and 156141 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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) [2022-12-13 16:02:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:02:51,656 INFO L93 Difference]: Finished difference Result 209005 states and 300405 transitions. [2022-12-13 16:02:51,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:02:51,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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 104 [2022-12-13 16:02:51,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:02:51,929 INFO L225 Difference]: With dead ends: 209005 [2022-12-13 16:02:51,929 INFO L226 Difference]: Without dead ends: 194091 [2022-12-13 16:02:51,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-12-13 16:02:51,967 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 9815 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9815 SdHoareTripleChecker+Valid, 4750 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:02:51,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9815 Valid, 4750 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:02:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194091 states. [2022-12-13 16:03:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194091 to 123933. [2022-12-13 16:03:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123933 states, 123931 states have (on average 1.4318693466525727) internal successors, (177453), 123932 states have internal predecessors, (177453), 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) [2022-12-13 16:03:19,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123933 states to 123933 states and 177453 transitions. [2022-12-13 16:03:19,625 INFO L78 Accepts]: Start accepts. Automaton has 123933 states and 177453 transitions. Word has length 104 [2022-12-13 16:03:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:03:19,625 INFO L495 AbstractCegarLoop]: Abstraction has 123933 states and 177453 transitions. [2022-12-13 16:03:19,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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) [2022-12-13 16:03:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 123933 states and 177453 transitions. [2022-12-13 16:03:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 16:03:19,631 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:03:19,631 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:03:19,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 16:03:19,632 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:03:19,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1250794594, now seen corresponding path program 1 times [2022-12-13 16:03:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:19,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218123709] [2022-12-13 16:03:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:03:19,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:19,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218123709] [2022-12-13 16:03:19,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218123709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:19,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:19,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:03:19,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479779151] [2022-12-13 16:03:19,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:19,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:19,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:19,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:19,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:19,700 INFO L87 Difference]: Start difference. First operand 123933 states and 177453 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-12-13 16:03:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:03:47,324 INFO L93 Difference]: Finished difference Result 246305 states and 352431 transitions. [2022-12-13 16:03:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:47,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-12-13 16:03:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:03:47,487 INFO L225 Difference]: With dead ends: 246305 [2022-12-13 16:03:47,487 INFO L226 Difference]: Without dead ends: 123935 [2022-12-13 16:03:47,542 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 [2022-12-13 16:03:47,542 INFO L413 NwaCegarLoop]: 1632 mSDtfsCounter, 61 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:03:47,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3202 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:03:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123935 states. [2022-12-13 16:04:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123935 to 123933. [2022-12-13 16:04:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123933 states, 123931 states have (on average 1.4192171450242475) internal successors, (175885), 123932 states have internal predecessors, (175885), 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) [2022-12-13 16:04:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123933 states to 123933 states and 175885 transitions. [2022-12-13 16:04:15,010 INFO L78 Accepts]: Start accepts. Automaton has 123933 states and 175885 transitions. Word has length 105 [2022-12-13 16:04:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:15,011 INFO L495 AbstractCegarLoop]: Abstraction has 123933 states and 175885 transitions. [2022-12-13 16:04:15,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-12-13 16:04:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 123933 states and 175885 transitions. [2022-12-13 16:04:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 16:04:15,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:15,015 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] [2022-12-13 16:04:15,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 16:04:15,016 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:15,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash -823970074, now seen corresponding path program 1 times [2022-12-13 16:04:15,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:15,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474242249] [2022-12-13 16:04:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:15,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:15,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:15,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474242249] [2022-12-13 16:04:15,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474242249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:15,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:15,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:15,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978162012] [2022-12-13 16:04:15,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:15,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:15,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:15,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:15,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:15,078 INFO L87 Difference]: Start difference. First operand 123933 states and 175885 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-12-13 16:04:25,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:25,870 INFO L93 Difference]: Finished difference Result 168568 states and 239559 transitions. [2022-12-13 16:04:25,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:25,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-12-13 16:04:25,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:25,926 INFO L225 Difference]: With dead ends: 168568 [2022-12-13 16:04:25,926 INFO L226 Difference]: Without dead ends: 46198 [2022-12-13 16:04:25,979 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 [2022-12-13 16:04:25,980 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 55 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:25,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3199 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46198 states. [2022-12-13 16:04:36,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46198 to 46190. [2022-12-13 16:04:36,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46190 states, 46188 states have (on average 1.420239023122889) internal successors, (65598), 46189 states have internal predecessors, (65598), 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) [2022-12-13 16:04:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46190 states to 46190 states and 65598 transitions. [2022-12-13 16:04:36,232 INFO L78 Accepts]: Start accepts. Automaton has 46190 states and 65598 transitions. Word has length 106 [2022-12-13 16:04:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:36,232 INFO L495 AbstractCegarLoop]: Abstraction has 46190 states and 65598 transitions. [2022-12-13 16:04:36,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-12-13 16:04:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 46190 states and 65598 transitions. [2022-12-13 16:04:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 16:04:36,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:36,235 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:04:36,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 16:04:36,235 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:36,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:36,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1089145556, now seen corresponding path program 1 times [2022-12-13 16:04:36,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:36,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385719225] [2022-12-13 16:04:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:36,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:36,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385719225] [2022-12-13 16:04:36,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385719225] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:36,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:36,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172254723] [2022-12-13 16:04:36,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:36,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:36,293 INFO L87 Difference]: Start difference. First operand 46190 states and 65598 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2022-12-13 16:04:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:41,229 INFO L93 Difference]: Finished difference Result 68498 states and 97152 transitions. [2022-12-13 16:04:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2022-12-13 16:04:41,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:41,251 INFO L225 Difference]: With dead ends: 68498 [2022-12-13 16:04:41,251 INFO L226 Difference]: Without dead ends: 23888 [2022-12-13 16:04:41,268 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 [2022-12-13 16:04:41,268 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 57 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:41,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3178 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23888 states. [2022-12-13 16:04:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23888 to 23886. [2022-12-13 16:04:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23886 states, 23884 states have (on average 1.4140847429241332) internal successors, (33774), 23885 states have internal predecessors, (33774), 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) [2022-12-13 16:04:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23886 states to 23886 states and 33774 transitions. [2022-12-13 16:04:46,160 INFO L78 Accepts]: Start accepts. Automaton has 23886 states and 33774 transitions. Word has length 107 [2022-12-13 16:04:46,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:46,160 INFO L495 AbstractCegarLoop]: Abstraction has 23886 states and 33774 transitions. [2022-12-13 16:04:46,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2022-12-13 16:04:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 23886 states and 33774 transitions. [2022-12-13 16:04:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 16:04:46,162 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:46,162 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:04:46,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 16:04:46,163 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:46,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:46,163 INFO L85 PathProgramCache]: Analyzing trace with hash -405266490, now seen corresponding path program 1 times [2022-12-13 16:04:46,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:46,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895779269] [2022-12-13 16:04:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:46,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:46,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:46,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895779269] [2022-12-13 16:04:46,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895779269] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:46,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:46,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:46,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850125301] [2022-12-13 16:04:46,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:46,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:46,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:46,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:46,220 INFO L87 Difference]: Start difference. First operand 23886 states and 33774 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-12-13 16:04:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:48,699 INFO L93 Difference]: Finished difference Result 35042 states and 49416 transitions. [2022-12-13 16:04:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:48,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2022-12-13 16:04:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:48,710 INFO L225 Difference]: With dead ends: 35042 [2022-12-13 16:04:48,711 INFO L226 Difference]: Without dead ends: 12736 [2022-12-13 16:04:48,718 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 [2022-12-13 16:04:48,719 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 54 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:48,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3163 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:48,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12736 states. [2022-12-13 16:04:51,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12736 to 12734. [2022-12-13 16:04:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12734 states, 12732 states have (on average 1.413603518693057) internal successors, (17998), 12733 states have internal predecessors, (17998), 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) [2022-12-13 16:04:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12734 states to 12734 states and 17998 transitions. [2022-12-13 16:04:51,189 INFO L78 Accepts]: Start accepts. Automaton has 12734 states and 17998 transitions. Word has length 109 [2022-12-13 16:04:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:51,189 INFO L495 AbstractCegarLoop]: Abstraction has 12734 states and 17998 transitions. [2022-12-13 16:04:51,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-12-13 16:04:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 12734 states and 17998 transitions. [2022-12-13 16:04:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 16:04:51,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:51,191 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 16:04:51,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 16:04:51,191 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:51,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1641546952, now seen corresponding path program 1 times [2022-12-13 16:04:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:51,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802763946] [2022-12-13 16:04:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:51,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:51,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802763946] [2022-12-13 16:04:51,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802763946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:51,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:51,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:51,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764226329] [2022-12-13 16:04:51,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:51,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:51,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:51,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:51,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:51,248 INFO L87 Difference]: Start difference. First operand 12734 states and 17998 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2022-12-13 16:04:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:52,494 INFO L93 Difference]: Finished difference Result 18314 states and 25752 transitions. [2022-12-13 16:04:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:52,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 111 [2022-12-13 16:04:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:52,500 INFO L225 Difference]: With dead ends: 18314 [2022-12-13 16:04:52,500 INFO L226 Difference]: Without dead ends: 7160 [2022-12-13 16:04:52,505 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 [2022-12-13 16:04:52,505 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 51 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:52,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3148 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7160 states. [2022-12-13 16:04:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7160 to 7158. [2022-12-13 16:04:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7158 states, 7156 states have (on average 1.42230296254891) internal successors, (10178), 7157 states have internal predecessors, (10178), 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) [2022-12-13 16:04:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7158 states to 7158 states and 10178 transitions. [2022-12-13 16:04:53,746 INFO L78 Accepts]: Start accepts. Automaton has 7158 states and 10178 transitions. Word has length 111 [2022-12-13 16:04:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:53,746 INFO L495 AbstractCegarLoop]: Abstraction has 7158 states and 10178 transitions. [2022-12-13 16:04:53,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2022-12-13 16:04:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 7158 states and 10178 transitions. [2022-12-13 16:04:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 16:04:53,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:53,748 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-12-13 16:04:53,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 16:04:53,748 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2078950102, now seen corresponding path program 1 times [2022-12-13 16:04:53,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:53,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697778435] [2022-12-13 16:04:53,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:53,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:53,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:53,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697778435] [2022-12-13 16:04:53,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697778435] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:53,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:53,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:53,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259446757] [2022-12-13 16:04:53,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:53,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:53,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:53,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:53,804 INFO L87 Difference]: Start difference. First operand 7158 states and 10178 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-12-13 16:04:54,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:54,452 INFO L93 Difference]: Finished difference Result 9950 states and 14022 transitions. [2022-12-13 16:04:54,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:54,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2022-12-13 16:04:54,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:54,456 INFO L225 Difference]: With dead ends: 9950 [2022-12-13 16:04:54,457 INFO L226 Difference]: Without dead ends: 4372 [2022-12-13 16:04:54,459 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 [2022-12-13 16:04:54,459 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 48 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:54,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3133 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4372 states. [2022-12-13 16:04:55,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4372 to 4370. [2022-12-13 16:04:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4368 states have (on average 1.4427655677655677) internal successors, (6302), 4369 states have internal predecessors, (6302), 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) [2022-12-13 16:04:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 6302 transitions. [2022-12-13 16:04:55,081 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 6302 transitions. Word has length 113 [2022-12-13 16:04:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:55,081 INFO L495 AbstractCegarLoop]: Abstraction has 4370 states and 6302 transitions. [2022-12-13 16:04:55,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-12-13 16:04:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 6302 transitions. [2022-12-13 16:04:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 16:04:55,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:55,082 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:55,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 16:04:55,082 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:55,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:55,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1833207196, now seen corresponding path program 1 times [2022-12-13 16:04:55,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:55,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744520568] [2022-12-13 16:04:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:55,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:55,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:55,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744520568] [2022-12-13 16:04:55,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744520568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:55,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:55,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530199614] [2022-12-13 16:04:55,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:55,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:55,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:55,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:55,137 INFO L87 Difference]: Start difference. First operand 4370 states and 6302 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2022-12-13 16:04:55,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:04:55,470 INFO L93 Difference]: Finished difference Result 5768 states and 8208 transitions. [2022-12-13 16:04:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:55,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2022-12-13 16:04:55,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:04:55,473 INFO L225 Difference]: With dead ends: 5768 [2022-12-13 16:04:55,473 INFO L226 Difference]: Without dead ends: 2978 [2022-12-13 16:04:55,474 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 [2022-12-13 16:04:55,475 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 45 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:04:55,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3118 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:04:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2022-12-13 16:04:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2976. [2022-12-13 16:04:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2974 states have (on average 1.4731002017484869) internal successors, (4381), 2975 states have internal predecessors, (4381), 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) [2022-12-13 16:04:55,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 4381 transitions. [2022-12-13 16:04:55,817 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 4381 transitions. Word has length 115 [2022-12-13 16:04:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:04:55,817 INFO L495 AbstractCegarLoop]: Abstraction has 2976 states and 4381 transitions. [2022-12-13 16:04:55,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2022-12-13 16:04:55,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 4381 transitions. [2022-12-13 16:04:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 16:04:55,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:04:55,819 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:55,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 16:04:55,819 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:04:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1388278926, now seen corresponding path program 1 times [2022-12-13 16:04:55,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:55,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603976223] [2022-12-13 16:04:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:55,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:56,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:56,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603976223] [2022-12-13 16:04:56,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603976223] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:04:56,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833944919] [2022-12-13 16:04:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:56,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:04:56,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:04:56,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:04:56,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:04:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:56,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:04:56,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:04:56,957 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:04:56,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:04:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:04:57,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833944919] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:04:57,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:04:57,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-12-13 16:04:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151993867] [2022-12-13 16:04:57,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:04:57,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 16:04:57,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 16:04:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-12-13 16:04:57,340 INFO L87 Difference]: Start difference. First operand 2976 states and 4381 transitions. Second operand has 19 states, 19 states have (on average 17.57894736842105) internal successors, (334), 19 states have internal predecessors, (334), 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) [2022-12-13 16:05:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:08,873 INFO L93 Difference]: Finished difference Result 18696 states and 25057 transitions. [2022-12-13 16:05:08,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-13 16:05:08,874 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 17.57894736842105) internal successors, (334), 19 states have internal predecessors, (334), 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 117 [2022-12-13 16:05:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:08,886 INFO L225 Difference]: With dead ends: 18696 [2022-12-13 16:05:08,886 INFO L226 Difference]: Without dead ends: 17300 [2022-12-13 16:05:08,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1184, Invalid=5458, Unknown=0, NotChecked=0, Total=6642 [2022-12-13 16:05:08,890 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 24090 mSDsluCounter, 6771 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24090 SdHoareTripleChecker+Valid, 8322 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:08,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24090 Valid, 8322 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 16:05:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17300 states. [2022-12-13 16:05:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17300 to 12350. [2022-12-13 16:05:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12350 states, 12348 states have (on average 1.3549562682215743) internal successors, (16731), 12349 states have internal predecessors, (16731), 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) [2022-12-13 16:05:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12350 states to 12350 states and 16731 transitions. [2022-12-13 16:05:11,926 INFO L78 Accepts]: Start accepts. Automaton has 12350 states and 16731 transitions. Word has length 117 [2022-12-13 16:05:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:05:11,926 INFO L495 AbstractCegarLoop]: Abstraction has 12350 states and 16731 transitions. [2022-12-13 16:05:11,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.57894736842105) internal successors, (334), 19 states have internal predecessors, (334), 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) [2022-12-13 16:05:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 12350 states and 16731 transitions. [2022-12-13 16:05:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 16:05:11,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:05:11,928 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:11,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:05:12,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 16:05:12,130 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:05:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:12,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1084865964, now seen corresponding path program 1 times [2022-12-13 16:05:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:12,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922190608] [2022-12-13 16:05:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:12,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:05:12,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922190608] [2022-12-13 16:05:12,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922190608] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:05:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532710597] [2022-12-13 16:05:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:05:12,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:05:12,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:05:12,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:05:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:12,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:05:12,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:05:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:05:13,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:05:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:05:15,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532710597] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:05:15,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:05:15,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 30 [2022-12-13 16:05:15,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647059528] [2022-12-13 16:05:15,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:05:15,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 16:05:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:15,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 16:05:15,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2022-12-13 16:05:15,128 INFO L87 Difference]: Start difference. First operand 12350 states and 16731 transitions. Second operand has 30 states, 30 states have (on average 11.066666666666666) internal successors, (332), 30 states have internal predecessors, (332), 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) [2022-12-13 16:05:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:05:59,300 INFO L93 Difference]: Finished difference Result 107703 states and 132624 transitions. [2022-12-13 16:05:59,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-13 16:05:59,300 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 11.066666666666666) internal successors, (332), 30 states have internal predecessors, (332), 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 118 [2022-12-13 16:05:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:05:59,400 INFO L225 Difference]: With dead ends: 107703 [2022-12-13 16:05:59,401 INFO L226 Difference]: Without dead ends: 97322 [2022-12-13 16:05:59,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3940 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2103, Invalid=10329, Unknown=0, NotChecked=0, Total=12432 [2022-12-13 16:05:59,422 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 23830 mSDsluCounter, 8947 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23830 SdHoareTripleChecker+Valid, 10512 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:05:59,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23830 Valid, 10512 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 16:05:59,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97322 states. [2022-12-13 16:06:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97322 to 39987. [2022-12-13 16:06:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39987 states, 39985 states have (on average 1.3164686757534074) internal successors, (52639), 39986 states have internal predecessors, (52639), 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) [2022-12-13 16:06:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39987 states to 39987 states and 52639 transitions. [2022-12-13 16:06:12,256 INFO L78 Accepts]: Start accepts. Automaton has 39987 states and 52639 transitions. Word has length 118 [2022-12-13 16:06:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:06:12,256 INFO L495 AbstractCegarLoop]: Abstraction has 39987 states and 52639 transitions. [2022-12-13 16:06:12,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.066666666666666) internal successors, (332), 30 states have internal predecessors, (332), 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) [2022-12-13 16:06:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 39987 states and 52639 transitions. [2022-12-13 16:06:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 16:06:12,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:06:12,257 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:06:12,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 16:06:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:06:12,459 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:06:12,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:06:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1337772972, now seen corresponding path program 1 times [2022-12-13 16:06:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:06:12,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722989944] [2022-12-13 16:06:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:06:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:06:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:06:13,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722989944] [2022-12-13 16:06:13,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722989944] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:06:13,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031109420] [2022-12-13 16:06:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:13,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:06:13,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:06:13,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:06:13,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:06:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:13,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 16:06:13,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:06:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:06:13,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:06:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:06:15,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031109420] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:06:15,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:06:15,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-12-13 16:06:15,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132828314] [2022-12-13 16:06:15,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:06:15,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 16:06:15,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:06:15,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 16:06:15,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 16:06:15,465 INFO L87 Difference]: Start difference. First operand 39987 states and 52639 transitions. Second operand has 34 states, 34 states have (on average 9.882352941176471) internal successors, (336), 34 states have internal predecessors, (336), 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) [2022-12-13 16:07:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:07:07,782 INFO L93 Difference]: Finished difference Result 144852 states and 183516 transitions. [2022-12-13 16:07:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-13 16:07:07,783 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.882352941176471) internal successors, (336), 34 states have internal predecessors, (336), 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 118 [2022-12-13 16:07:07,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:07:07,910 INFO L225 Difference]: With dead ends: 144852 [2022-12-13 16:07:07,910 INFO L226 Difference]: Without dead ends: 109609 [2022-12-13 16:07:07,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3242 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2076, Invalid=9266, Unknown=0, NotChecked=0, Total=11342 [2022-12-13 16:07:07,945 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 22328 mSDsluCounter, 10425 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22328 SdHoareTripleChecker+Valid, 11985 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:07:07,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22328 Valid, 11985 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 16:07:08,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109609 states. [2022-12-13 16:07:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109609 to 54917. [2022-12-13 16:07:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54917 states, 54915 states have (on average 1.3183829554766457) internal successors, (72399), 54916 states have internal predecessors, (72399), 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) [2022-12-13 16:07:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54917 states to 54917 states and 72399 transitions. [2022-12-13 16:07:26,910 INFO L78 Accepts]: Start accepts. Automaton has 54917 states and 72399 transitions. Word has length 118 [2022-12-13 16:07:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:07:26,911 INFO L495 AbstractCegarLoop]: Abstraction has 54917 states and 72399 transitions. [2022-12-13 16:07:26,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.882352941176471) internal successors, (336), 34 states have internal predecessors, (336), 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) [2022-12-13 16:07:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 54917 states and 72399 transitions. [2022-12-13 16:07:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 16:07:26,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:07:26,912 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:07:26,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:07:27,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:07:27,114 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:07:27,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1943534064, now seen corresponding path program 1 times [2022-12-13 16:07:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:27,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419789739] [2022-12-13 16:07:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:27,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:07:28,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:28,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419789739] [2022-12-13 16:07:28,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419789739] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:07:28,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593315430] [2022-12-13 16:07:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:28,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:07:28,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:07:28,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:07:28,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78350521-6fee-40b6-a162-0fcc15ff875e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:07:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:28,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 16:07:28,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:07:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:07:29,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:07:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:07:29,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593315430] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:07:29,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:07:29,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2022-12-13 16:07:29,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006538996] [2022-12-13 16:07:29,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:07:29,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 16:07:29,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 16:07:29,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-12-13 16:07:29,857 INFO L87 Difference]: Start difference. First operand 54917 states and 72399 transitions. Second operand has 28 states, 28 states have (on average 11.035714285714286) internal successors, (309), 27 states have internal predecessors, (309), 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)