./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i --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_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/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_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/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_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/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 be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- 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 11:21:59,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:21:59,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:21:59,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:21:59,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:21:59,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:21:59,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:21:59,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:21:59,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:21:59,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:21:59,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:21:59,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:21:59,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:21:59,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:21:59,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:21:59,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:21:59,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:21:59,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:21:59,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:21:59,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:21:59,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:21:59,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:21:59,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:21:59,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:21:59,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:21:59,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:21:59,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:21:59,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:21:59,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:21:59,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:21:59,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:21:59,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:21:59,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:21:59,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:21:59,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:21:59,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:21:59,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:21:59,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:21:59,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:21:59,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:21:59,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:21:59,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:21:59,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:21:59,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:21:59,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:21:59,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:21:59,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:21:59,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:21:59,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:21:59,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:21:59,447 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:21:59,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:21:59,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:21:59,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:21:59,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:21:59,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:21:59,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:21:59,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:21:59,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:21:59,448 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:21:59,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:21:59,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:21:59,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:21:59,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:21:59,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:21:59,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:21:59,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:21:59,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:21:59,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:21:59,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:21:59,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:21:59,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:21:59,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:21:59,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:21:59,451 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:21:59,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:21:59,451 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:21:59,451 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_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2022-12-13 11:21:59,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:21:59,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:21:59,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:21:59,676 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:21:59,676 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:21:59,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2022-12-13 11:22:02,259 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:22:02,393 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:22:02,393 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2022-12-13 11:22:02,399 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/data/4f0423524/004057e0537d4c9b9ade1d839a873089/FLAG340c90bf5 [2022-12-13 11:22:02,409 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/data/4f0423524/004057e0537d4c9b9ade1d839a873089 [2022-12-13 11:22:02,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:22:02,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:22:02,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:22:02,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:22:02,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:22:02,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617c5574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02, skipping insertion in model container [2022-12-13 11:22:02,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:22:02,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:22:02,541 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_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2022-12-13 11:22:02,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:22:02,556 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:22:02,565 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_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2022-12-13 11:22:02,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:22:02,578 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:22:02,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02 WrapperNode [2022-12-13 11:22:02,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:22:02,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:22:02,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:22:02,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:22:02,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,601 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-12-13 11:22:02,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:22:02,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:22:02,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:22:02,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:22:02,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,619 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:22:02,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:22:02,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:22:02,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:22:02,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (1/1) ... [2022-12-13 11:22:02,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:22:02,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:02,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:22:02,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:22:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:22:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:22:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:22:02,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:22:02,731 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:22:02,733 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:22:02,810 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:22:02,814 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:22:02,815 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 11:22:02,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:22:02 BoogieIcfgContainer [2022-12-13 11:22:02,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:22:02,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:22:02,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:22:02,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:22:02,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:22:02" (1/3) ... [2022-12-13 11:22:02,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6079ce14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:22:02, skipping insertion in model container [2022-12-13 11:22:02,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:22:02" (2/3) ... [2022-12-13 11:22:02,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6079ce14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:22:02, skipping insertion in model container [2022-12-13 11:22:02,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:22:02" (3/3) ... [2022-12-13 11:22:02,822 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2022-12-13 11:22:02,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:22:02,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:22:02,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:22:02,878 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;@28de7a9e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>] [2022-12-13 11:22:02,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:22:02,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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 11:22:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 11:22:02,886 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:02,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:02,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:02,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:02,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1265170590, now seen corresponding path program 1 times [2022-12-13 11:22:02,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:02,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125019357] [2022-12-13 11:22:02,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:02,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:02,995 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 11:22:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:02,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125019357] [2022-12-13 11:22:02,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125019357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:22:02,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:22:02,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:22:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661281194] [2022-12-13 11:22:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:22:03,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:22:03,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:03,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:22:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:22:03,024 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11:22:03,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:03,036 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2022-12-13 11:22:03,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:22:03,038 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-12-13 11:22:03,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:03,051 INFO L225 Difference]: With dead ends: 34 [2022-12-13 11:22:03,051 INFO L226 Difference]: Without dead ends: 15 [2022-12-13 11:22:03,053 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 11:22:03,056 INFO L413 NwaCegarLoop]: 22 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, 22 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 11:22:03,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-13 11:22:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-13 11:22:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 11:22:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-12-13 11:22:03,085 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2022-12-13 11:22:03,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:03,086 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-12-13 11:22:03,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11:22:03,086 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-12-13 11:22:03,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 11:22:03,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:03,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:03,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:22:03,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:03,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:03,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1704738984, now seen corresponding path program 1 times [2022-12-13 11:22:03,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:03,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023497205] [2022-12-13 11:22:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:03,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:03,261 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 11:22:03,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:03,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023497205] [2022-12-13 11:22:03,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023497205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:22:03,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:22:03,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:22:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477468585] [2022-12-13 11:22:03,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:22:03,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:22:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:22:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:22:03,265 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 11:22:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:03,294 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-12-13 11:22:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:22:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-12-13 11:22:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:03,295 INFO L225 Difference]: With dead ends: 20 [2022-12-13 11:22:03,295 INFO L226 Difference]: Without dead ends: 18 [2022-12-13 11:22:03,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:22:03,297 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 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 11:22:03,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-13 11:22:03,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-12-13 11:22:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 11:22:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-12-13 11:22:03,303 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2022-12-13 11:22:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:03,303 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-13 11:22:03,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 11:22:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-12-13 11:22:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 11:22:03,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:03,304 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:03,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:22:03,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1111328011, now seen corresponding path program 1 times [2022-12-13 11:22:03,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:03,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056986985] [2022-12-13 11:22:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:03,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:03,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:03,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056986985] [2022-12-13 11:22:03,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056986985] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:22:03,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:22:03,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:22:03,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140417956] [2022-12-13 11:22:03,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:22:03,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:22:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:03,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:22:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:22:03,424 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 11:22:03,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:03,475 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-12-13 11:22:03,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:22:03,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-12-13 11:22:03,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:03,476 INFO L225 Difference]: With dead ends: 34 [2022-12-13 11:22:03,477 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 11:22:03,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:22:03,478 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:03,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 11:22:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2022-12-13 11:22:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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 11:22:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-12-13 11:22:03,482 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2022-12-13 11:22:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:03,482 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-12-13 11:22:03,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 11:22:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-12-13 11:22:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 11:22:03,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:03,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:03,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:22:03,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:03,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1396960176, now seen corresponding path program 1 times [2022-12-13 11:22:03,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:03,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072936298] [2022-12-13 11:22:03,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:03,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:03,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:03,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072936298] [2022-12-13 11:22:03,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072936298] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:03,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867396684] [2022-12-13 11:22:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:03,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:03,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:03,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:03,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:22:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:03,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:22:03,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:03,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:03,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867396684] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:03,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:03,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 11:22:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388878389] [2022-12-13 11:22:03,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:03,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:22:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:22:03,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:22:03,761 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 11:22:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:03,895 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-12-13 11:22:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 11:22:03,896 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 18 [2022-12-13 11:22:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:03,896 INFO L225 Difference]: With dead ends: 45 [2022-12-13 11:22:03,896 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 11:22:03,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:22:03,898 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:03,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 52 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:03,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 11:22:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 25. [2022-12-13 11:22:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 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 11:22:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-12-13 11:22:03,905 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2022-12-13 11:22:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:03,906 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-12-13 11:22:03,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 11:22:03,906 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-12-13 11:22:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 11:22:03,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:03,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:03,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:04,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:04,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2071602104, now seen corresponding path program 2 times [2022-12-13 11:22:04,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:04,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407266599] [2022-12-13 11:22:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:04,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:04,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407266599] [2022-12-13 11:22:04,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407266599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:04,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019263314] [2022-12-13 11:22:04,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:22:04,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:04,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:04,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:04,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:22:04,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:22:04,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:04,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:22:04,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:04,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:04,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019263314] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:04,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:04,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-12-13 11:22:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73649520] [2022-12-13 11:22:04,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:04,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 11:22:04,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 11:22:04,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:22:04,472 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 11:22:04,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:04,549 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2022-12-13 11:22:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:22:04,549 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 24 [2022-12-13 11:22:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:04,550 INFO L225 Difference]: With dead ends: 54 [2022-12-13 11:22:04,550 INFO L226 Difference]: Without dead ends: 39 [2022-12-13 11:22:04,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:22:04,551 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:04,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 80 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-13 11:22:04,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2022-12-13 11:22:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:22:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-12-13 11:22:04,557 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 24 [2022-12-13 11:22:04,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:04,557 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-12-13 11:22:04,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 11:22:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-12-13 11:22:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 11:22:04,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:04,557 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:04,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:22:04,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:04,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:04,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash 65129965, now seen corresponding path program 3 times [2022-12-13 11:22:04,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:04,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368926355] [2022-12-13 11:22:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:04,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:04,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:04,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368926355] [2022-12-13 11:22:04,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368926355] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:04,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154399873] [2022-12-13 11:22:04,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:22:04,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:04,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:04,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:22:05,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 11:22:05,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:05,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 11:22:05,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:05,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:05,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154399873] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:05,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:05,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-12-13 11:22:05,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240550592] [2022-12-13 11:22:05,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:05,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:22:05,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:22:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:22:05,105 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 11:22:05,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:05,175 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-12-13 11:22:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:22:05,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 26 [2022-12-13 11:22:05,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:05,176 INFO L225 Difference]: With dead ends: 44 [2022-12-13 11:22:05,176 INFO L226 Difference]: Without dead ends: 42 [2022-12-13 11:22:05,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:22:05,177 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:05,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 87 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-13 11:22:05,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2022-12-13 11:22:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 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 11:22:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-12-13 11:22:05,189 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 26 [2022-12-13 11:22:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:05,189 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-12-13 11:22:05,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 11:22:05,189 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-12-13 11:22:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 11:22:05,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:05,190 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:05,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:22:05,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 11:22:05,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:05,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:05,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1290527443, now seen corresponding path program 4 times [2022-12-13 11:22:05,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:05,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637674136] [2022-12-13 11:22:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:05,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:05,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637674136] [2022-12-13 11:22:05,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637674136] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:05,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901208351] [2022-12-13 11:22:05,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:22:05,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:05,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:05,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:05,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:22:05,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:22:05,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:05,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 11:22:05,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:05,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:05,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901208351] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:05,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:05,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-12-13 11:22:05,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122874800] [2022-12-13 11:22:05,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:05,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:22:05,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:05,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:22:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:22:05,849 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 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 11:22:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:06,014 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2022-12-13 11:22:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:22:06,015 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 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 34 [2022-12-13 11:22:06,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:06,016 INFO L225 Difference]: With dead ends: 97 [2022-12-13 11:22:06,016 INFO L226 Difference]: Without dead ends: 59 [2022-12-13 11:22:06,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2022-12-13 11:22:06,018 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:06,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 117 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:06,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-13 11:22:06,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2022-12-13 11:22:06,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 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 11:22:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-12-13 11:22:06,024 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 34 [2022-12-13 11:22:06,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:06,025 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-12-13 11:22:06,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 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 11:22:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-12-13 11:22:06,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 11:22:06,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:06,025 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:06,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:22:06,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:06,226 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1017343069, now seen corresponding path program 5 times [2022-12-13 11:22:06,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:06,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824020457] [2022-12-13 11:22:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:06,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:06,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:06,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824020457] [2022-12-13 11:22:06,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824020457] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:06,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070053660] [2022-12-13 11:22:06,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:22:06,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:06,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:06,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:06,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:22:06,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-13 11:22:06,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:06,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:22:06,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:06,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:06,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070053660] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:06,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:06,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-12-13 11:22:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099967981] [2022-12-13 11:22:06,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:06,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:22:06,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:22:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:22:06,577 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 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 11:22:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:06,666 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2022-12-13 11:22:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 11:22:06,667 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 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 38 [2022-12-13 11:22:06,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:06,667 INFO L225 Difference]: With dead ends: 56 [2022-12-13 11:22:06,668 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 11:22:06,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:22:06,669 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:06,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 103 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 11:22:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2022-12-13 11:22:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 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 11:22:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2022-12-13 11:22:06,675 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 38 [2022-12-13 11:22:06,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:06,675 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2022-12-13 11:22:06,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 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 11:22:06,675 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2022-12-13 11:22:06,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 11:22:06,676 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:06,676 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:06,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:22:06,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:06,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1327501635, now seen corresponding path program 6 times [2022-12-13 11:22:06,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:06,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64423580] [2022-12-13 11:22:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 57 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:07,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:07,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64423580] [2022-12-13 11:22:07,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64423580] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:07,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376053735] [2022-12-13 11:22:07,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:22:07,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:07,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:07,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:07,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:22:07,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-13 11:22:07,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:07,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 11:22:07,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:07,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:07,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376053735] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:07,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:07,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2022-12-13 11:22:07,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014396146] [2022-12-13 11:22:07,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:07,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 11:22:07,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 11:22:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-12-13 11:22:07,417 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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 11:22:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:07,656 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2022-12-13 11:22:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:22:07,656 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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 46 [2022-12-13 11:22:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:07,657 INFO L225 Difference]: With dead ends: 133 [2022-12-13 11:22:07,658 INFO L226 Difference]: Without dead ends: 79 [2022-12-13 11:22:07,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 72 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 11:22:07,660 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 96 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:07,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 158 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:07,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-12-13 11:22:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 51. [2022-12-13 11:22:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 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 11:22:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-12-13 11:22:07,667 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 46 [2022-12-13 11:22:07,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:07,667 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-12-13 11:22:07,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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 11:22:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-12-13 11:22:07,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 11:22:07,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:07,668 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:07,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:22:07,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 11:22:07,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:07,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:07,870 INFO L85 PathProgramCache]: Analyzing trace with hash 359898061, now seen corresponding path program 7 times [2022-12-13 11:22:07,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:07,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442007488] [2022-12-13 11:22:07,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:07,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:08,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:08,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442007488] [2022-12-13 11:22:08,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442007488] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:08,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48042177] [2022-12-13 11:22:08,155 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:22:08,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:08,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:08,156 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:08,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:22:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:08,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 11:22:08,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:08,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:08,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48042177] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:08,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:08,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2022-12-13 11:22:08,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403942118] [2022-12-13 11:22:08,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:08,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:22:08,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:08,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:22:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:22:08,348 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 11:22:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:08,433 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2022-12-13 11:22:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:22:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 50 [2022-12-13 11:22:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:08,434 INFO L225 Difference]: With dead ends: 68 [2022-12-13 11:22:08,434 INFO L226 Difference]: Without dead ends: 66 [2022-12-13 11:22:08,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=194, Invalid=358, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:22:08,435 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 62 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:08,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 103 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-12-13 11:22:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2022-12-13 11:22:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 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 11:22:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2022-12-13 11:22:08,442 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 50 [2022-12-13 11:22:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:08,443 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2022-12-13 11:22:08,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 11:22:08,443 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2022-12-13 11:22:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 11:22:08,444 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:08,444 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:08,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:22:08,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:08,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:08,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash -968765261, now seen corresponding path program 8 times [2022-12-13 11:22:08,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:08,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168427739] [2022-12-13 11:22:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 107 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:08,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:08,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168427739] [2022-12-13 11:22:08,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168427739] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:08,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814533766] [2022-12-13 11:22:08,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:22:08,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:08,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:08,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:08,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:22:08,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:22:08,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:08,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:22:08,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 126 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:09,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 126 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:09,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814533766] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:09,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:09,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 29 [2022-12-13 11:22:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335746988] [2022-12-13 11:22:09,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:09,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 11:22:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 11:22:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2022-12-13 11:22:09,218 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 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 11:22:09,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:09,347 INFO L93 Difference]: Finished difference Result 130 states and 150 transitions. [2022-12-13 11:22:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 11:22:09,347 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 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 58 [2022-12-13 11:22:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:09,348 INFO L225 Difference]: With dead ends: 130 [2022-12-13 11:22:09,348 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 11:22:09,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 92 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 11:22:09,349 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 88 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:09,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 128 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 11:22:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 61. [2022-12-13 11:22:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 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 11:22:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-12-13 11:22:09,357 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 58 [2022-12-13 11:22:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:09,358 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-12-13 11:22:09,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 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 11:22:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-12-13 11:22:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 11:22:09,359 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:09,359 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:09,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:22:09,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:09,561 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:09,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash 85268760, now seen corresponding path program 9 times [2022-12-13 11:22:09,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:09,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440720338] [2022-12-13 11:22:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:09,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:09,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440720338] [2022-12-13 11:22:09,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440720338] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573431644] [2022-12-13 11:22:09,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:22:09,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:09,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:09,865 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:09,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:22:09,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-12-13 11:22:09,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:09,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 11:22:09,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:10,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:10,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573431644] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:10,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:10,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2022-12-13 11:22:10,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739567636] [2022-12-13 11:22:10,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:10,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 11:22:10,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 11:22:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2022-12-13 11:22:10,258 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 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 11:22:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:10,446 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2022-12-13 11:22:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 11:22:10,447 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-13 11:22:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:10,448 INFO L225 Difference]: With dead ends: 138 [2022-12-13 11:22:10,448 INFO L226 Difference]: Without dead ends: 99 [2022-12-13 11:22:10,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 93 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=1155, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 11:22:10,449 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 120 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:10,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 184 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-13 11:22:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 63. [2022-12-13 11:22:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 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 11:22:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2022-12-13 11:22:10,457 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 60 [2022-12-13 11:22:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:10,457 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2022-12-13 11:22:10,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 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 11:22:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2022-12-13 11:22:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 11:22:10,457 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:10,457 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:10,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:10,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:10,659 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:10,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:10,661 INFO L85 PathProgramCache]: Analyzing trace with hash -600318915, now seen corresponding path program 10 times [2022-12-13 11:22:10,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:10,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567886377] [2022-12-13 11:22:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:10,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:10,830 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 72 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:10,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:10,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567886377] [2022-12-13 11:22:10,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567886377] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:10,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910687772] [2022-12-13 11:22:10,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:22:10,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:10,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:10,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:10,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 11:22:10,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:22:10,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:10,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 11:22:10,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 90 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:10,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 90 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:11,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910687772] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:11,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:11,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2022-12-13 11:22:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602945139] [2022-12-13 11:22:11,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:11,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:22:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:22:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:22:11,082 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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 11:22:11,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:11,198 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2022-12-13 11:22:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 11:22:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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 62 [2022-12-13 11:22:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:11,199 INFO L225 Difference]: With dead ends: 80 [2022-12-13 11:22:11,199 INFO L226 Difference]: Without dead ends: 78 [2022-12-13 11:22:11,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 113 SyntacticMatches, 16 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=267, Invalid=489, Unknown=0, NotChecked=0, Total=756 [2022-12-13 11:22:11,200 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 76 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:11,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 107 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:11,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-12-13 11:22:11,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2022-12-13 11:22:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 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 11:22:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-12-13 11:22:11,207 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 62 [2022-12-13 11:22:11,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:11,207 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-12-13 11:22:11,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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 11:22:11,207 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-12-13 11:22:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-13 11:22:11,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:11,208 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:11,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 11:22:11,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:11,410 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2101960413, now seen corresponding path program 11 times [2022-12-13 11:22:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:11,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048047819] [2022-12-13 11:22:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:11,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 173 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:11,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:11,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048047819] [2022-12-13 11:22:11,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048047819] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:11,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233032245] [2022-12-13 11:22:11,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:22:11,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:11,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:11,753 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:11,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 11:22:11,807 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-12-13 11:22:11,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:11,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 11:22:11,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 200 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:12,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 200 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:12,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233032245] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:12,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:12,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 38 [2022-12-13 11:22:12,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2271995] [2022-12-13 11:22:12,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:12,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-13 11:22:12,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:12,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-13 11:22:12,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=1066, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 11:22:12,201 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 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 11:22:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:12,476 INFO L93 Difference]: Finished difference Result 205 states and 232 transitions. [2022-12-13 11:22:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 11:22:12,477 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 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 70 [2022-12-13 11:22:12,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:12,478 INFO L225 Difference]: With dead ends: 205 [2022-12-13 11:22:12,478 INFO L226 Difference]: Without dead ends: 119 [2022-12-13 11:22:12,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 108 SyntacticMatches, 17 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=856, Invalid=2566, Unknown=0, NotChecked=0, Total=3422 [2022-12-13 11:22:12,479 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 162 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:12,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 238 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:12,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-13 11:22:12,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 75. [2022-12-13 11:22:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.054054054054054) internal successors, (78), 74 states have internal predecessors, (78), 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 11:22:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2022-12-13 11:22:12,487 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 70 [2022-12-13 11:22:12,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:12,488 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2022-12-13 11:22:12,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 38 states have internal predecessors, (127), 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 11:22:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2022-12-13 11:22:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 11:22:12,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:12,489 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:12,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:12,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 11:22:12,690 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:12,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1953124947, now seen corresponding path program 12 times [2022-12-13 11:22:12,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:12,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958257540] [2022-12-13 11:22:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:12,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:12,929 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 110 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:12,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:12,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958257540] [2022-12-13 11:22:12,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958257540] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:12,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569899477] [2022-12-13 11:22:12,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:22:12,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:12,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:12,931 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:12,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 11:22:12,982 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-12-13 11:22:12,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:12,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 11:22:12,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 132 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:13,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 132 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:13,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569899477] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:13,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:13,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2022-12-13 11:22:13,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920835436] [2022-12-13 11:22:13,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:13,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 11:22:13,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 11:22:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:22:13,195 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 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 11:22:13,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:13,313 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2022-12-13 11:22:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 11:22:13,314 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 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 74 [2022-12-13 11:22:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:13,314 INFO L225 Difference]: With dead ends: 92 [2022-12-13 11:22:13,314 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 11:22:13,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 135 SyntacticMatches, 20 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=352, Invalid=640, Unknown=0, NotChecked=0, Total=992 [2022-12-13 11:22:13,315 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 90 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:13,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 119 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:13,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 11:22:13,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2022-12-13 11:22:13,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.048780487804878) internal successors, (86), 82 states have internal predecessors, (86), 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 11:22:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2022-12-13 11:22:13,322 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 74 [2022-12-13 11:22:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:13,322 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2022-12-13 11:22:13,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 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 11:22:13,322 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2022-12-13 11:22:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-13 11:22:13,323 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:13,323 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:13,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 11:22:13,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 11:22:13,524 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:13,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1101267603, now seen corresponding path program 13 times [2022-12-13 11:22:13,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:13,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578819306] [2022-12-13 11:22:13,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:13,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 255 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:13,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:13,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578819306] [2022-12-13 11:22:13,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578819306] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:13,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762170977] [2022-12-13 11:22:13,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:22:13,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:13,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:13,854 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:13,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 11:22:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:13,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 11:22:13,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 286 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:14,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 286 proven. 132 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:14,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762170977] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:14,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:14,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2022-12-13 11:22:14,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589219200] [2022-12-13 11:22:14,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:14,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-13 11:22:14,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:14,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-13 11:22:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 11:22:14,412 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 41 states have internal predecessors, (138), 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 11:22:14,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:14,633 INFO L93 Difference]: Finished difference Result 186 states and 214 transitions. [2022-12-13 11:22:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 11:22:14,633 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 41 states have internal predecessors, (138), 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 82 [2022-12-13 11:22:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:14,634 INFO L225 Difference]: With dead ends: 186 [2022-12-13 11:22:14,634 INFO L226 Difference]: Without dead ends: 133 [2022-12-13 11:22:14,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 128 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 11:22:14,635 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 165 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:14,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 231 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-12-13 11:22:14,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 85. [2022-12-13 11:22:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 84 states have internal predecessors, (88), 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 11:22:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2022-12-13 11:22:14,640 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 82 [2022-12-13 11:22:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:14,640 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2022-12-13 11:22:14,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 41 states have internal predecessors, (138), 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 11:22:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2022-12-13 11:22:14,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 11:22:14,640 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:14,641 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:14,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:14,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 11:22:14,842 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1272075272, now seen corresponding path program 14 times [2022-12-13 11:22:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:14,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923074886] [2022-12-13 11:22:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 255 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:15,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:15,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923074886] [2022-12-13 11:22:15,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923074886] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:15,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095262029] [2022-12-13 11:22:15,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:22:15,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:15,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:15,185 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:15,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 11:22:15,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:22:15,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:15,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 11:22:15,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 288 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:15,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 288 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:15,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095262029] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:15,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:15,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 43 [2022-12-13 11:22:15,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115656939] [2022-12-13 11:22:15,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:15,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 11:22:15,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:15,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 11:22:15,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=1383, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 11:22:15,829 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 43 states, 43 states have (on average 3.255813953488372) internal successors, (140), 43 states have internal predecessors, (140), 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 11:22:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:16,117 INFO L93 Difference]: Finished difference Result 194 states and 224 transitions. [2022-12-13 11:22:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 11:22:16,117 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.255813953488372) internal successors, (140), 43 states have internal predecessors, (140), 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 84 [2022-12-13 11:22:16,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:16,118 INFO L225 Difference]: With dead ends: 194 [2022-12-13 11:22:16,118 INFO L226 Difference]: Without dead ends: 139 [2022-12-13 11:22:16,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 129 SyntacticMatches, 24 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=789, Invalid=2291, Unknown=0, NotChecked=0, Total=3080 [2022-12-13 11:22:16,119 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 183 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:16,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 280 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-12-13 11:22:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 87. [2022-12-13 11:22:16,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0465116279069768) internal successors, (90), 86 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:22:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2022-12-13 11:22:16,127 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 84 [2022-12-13 11:22:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:16,127 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2022-12-13 11:22:16,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.255813953488372) internal successors, (140), 43 states have internal predecessors, (140), 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 11:22:16,127 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2022-12-13 11:22:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 11:22:16,128 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:16,128 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:16,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 11:22:16,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:16,329 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:16,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1426943971, now seen corresponding path program 15 times [2022-12-13 11:22:16,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:16,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370265484] [2022-12-13 11:22:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:16,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 156 proven. 314 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:16,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370265484] [2022-12-13 11:22:16,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370265484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019144817] [2022-12-13 11:22:16,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:22:16,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:16,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:16,579 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:16,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 11:22:16,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-12-13 11:22:16,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:16,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 11:22:16,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 182 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:16,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 182 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:16,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019144817] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:16,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:16,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2022-12-13 11:22:16,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774409595] [2022-12-13 11:22:16,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:16,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:22:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:16,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:22:16,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:22:16,950 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 20 states, 20 states have (on average 5.45) internal successors, (109), 20 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 11:22:17,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:17,135 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2022-12-13 11:22:17,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 11:22:17,135 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.45) internal successors, (109), 20 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 86 [2022-12-13 11:22:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:17,136 INFO L225 Difference]: With dead ends: 104 [2022-12-13 11:22:17,136 INFO L226 Difference]: Without dead ends: 102 [2022-12-13 11:22:17,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 157 SyntacticMatches, 24 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=449, Invalid=811, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 11:22:17,137 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 56 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:17,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 166 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-12-13 11:22:17,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2022-12-13 11:22:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 94 states have internal predecessors, (98), 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 11:22:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2022-12-13 11:22:17,143 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 86 [2022-12-13 11:22:17,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:17,143 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2022-12-13 11:22:17,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.45) internal successors, (109), 20 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 11:22:17,143 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2022-12-13 11:22:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 11:22:17,144 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:17,144 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:17,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 11:22:17,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 11:22:17,345 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1930463997, now seen corresponding path program 16 times [2022-12-13 11:22:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:17,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845508102] [2022-12-13 11:22:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:17,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 353 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:17,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845508102] [2022-12-13 11:22:17,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845508102] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717007704] [2022-12-13 11:22:17,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:22:17,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:17,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:17,682 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:17,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 11:22:17,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:22:17,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:17,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 11:22:17,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 392 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:18,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 392 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:18,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717007704] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:18,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:18,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 50 [2022-12-13 11:22:18,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164918842] [2022-12-13 11:22:18,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:18,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 11:22:18,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 11:22:18,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 11:22:18,282 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 50 states, 50 states have (on average 3.34) internal successors, (167), 50 states have internal predecessors, (167), 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 11:22:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:18,860 INFO L93 Difference]: Finished difference Result 277 states and 312 transitions. [2022-12-13 11:22:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 11:22:18,860 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.34) internal successors, (167), 50 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-12-13 11:22:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:18,862 INFO L225 Difference]: With dead ends: 277 [2022-12-13 11:22:18,862 INFO L226 Difference]: Without dead ends: 159 [2022-12-13 11:22:18,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 144 SyntacticMatches, 25 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2022-12-13 11:22:18,865 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 213 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:18,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 430 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:22:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-12-13 11:22:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2022-12-13 11:22:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 98 states have internal predecessors, (102), 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 11:22:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2022-12-13 11:22:18,875 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 94 [2022-12-13 11:22:18,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:18,875 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2022-12-13 11:22:18,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.34) internal successors, (167), 50 states have internal predecessors, (167), 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 11:22:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2022-12-13 11:22:18,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 11:22:18,876 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:18,876 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:18,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 11:22:19,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:19,077 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:19,079 INFO L85 PathProgramCache]: Analyzing trace with hash 779355021, now seen corresponding path program 17 times [2022-12-13 11:22:19,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:19,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438986109] [2022-12-13 11:22:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:19,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 210 proven. 422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:19,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:19,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438986109] [2022-12-13 11:22:19,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438986109] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:19,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980518407] [2022-12-13 11:22:19,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:22:19,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:19,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:19,361 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:19,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 11:22:19,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-12-13 11:22:19,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:19,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 11:22:19,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 240 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:19,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 240 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:19,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980518407] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:19,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:19,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2022-12-13 11:22:19,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10552559] [2022-12-13 11:22:19,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:19,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 11:22:19,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:19,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 11:22:19,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=282, Unknown=0, NotChecked=0, Total=462 [2022-12-13 11:22:19,669 INFO L87 Difference]: Start difference. First operand 99 states and 102 transitions. Second operand has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 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 11:22:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:19,812 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2022-12-13 11:22:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 11:22:19,812 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 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 98 [2022-12-13 11:22:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:19,813 INFO L225 Difference]: With dead ends: 116 [2022-12-13 11:22:19,813 INFO L226 Difference]: Without dead ends: 114 [2022-12-13 11:22:19,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 179 SyntacticMatches, 28 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=558, Invalid=1002, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 11:22:19,814 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 110 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:19,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 146 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:22:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-13 11:22:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2022-12-13 11:22:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0377358490566038) internal successors, (110), 106 states have internal predecessors, (110), 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 11:22:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2022-12-13 11:22:19,823 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 98 [2022-12-13 11:22:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:19,823 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2022-12-13 11:22:19,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 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 11:22:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2022-12-13 11:22:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 11:22:19,824 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:19,824 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:19,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:20,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:20,026 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:20,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1690404749, now seen corresponding path program 18 times [2022-12-13 11:22:20,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:20,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579021502] [2022-12-13 11:22:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:20,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 467 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:20,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:20,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579021502] [2022-12-13 11:22:20,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579021502] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:20,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802916710] [2022-12-13 11:22:20,522 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:22:20,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:20,523 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:20,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 11:22:20,589 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-12-13 11:22:20,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:20,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 11:22:20,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 512 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:21,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 512 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:21,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802916710] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:21,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:21,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 56 [2022-12-13 11:22:21,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880984397] [2022-12-13 11:22:21,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:21,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-13 11:22:21,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-13 11:22:21,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=2356, Unknown=0, NotChecked=0, Total=3080 [2022-12-13 11:22:21,335 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand has 56 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 56 states have internal predecessors, (187), 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 11:22:21,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:21,879 INFO L93 Difference]: Finished difference Result 313 states and 352 transitions. [2022-12-13 11:22:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 11:22:21,879 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 56 states have internal predecessors, (187), 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 11:22:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:21,881 INFO L225 Difference]: With dead ends: 313 [2022-12-13 11:22:21,881 INFO L226 Difference]: Without dead ends: 179 [2022-12-13 11:22:21,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 162 SyntacticMatches, 29 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1930, Invalid=5902, Unknown=0, NotChecked=0, Total=7832 [2022-12-13 11:22:21,885 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 265 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:21,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 463 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:22:21,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-13 11:22:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 111. [2022-12-13 11:22:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 110 states have internal predecessors, (114), 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 11:22:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2022-12-13 11:22:21,893 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 106 [2022-12-13 11:22:21,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:21,894 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2022-12-13 11:22:21,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 56 states have internal predecessors, (187), 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 11:22:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2022-12-13 11:22:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 11:22:21,894 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:21,894 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:21,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:22,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 11:22:22,095 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1459587069, now seen corresponding path program 19 times [2022-12-13 11:22:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:22,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726005208] [2022-12-13 11:22:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:22,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 272 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:22,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726005208] [2022-12-13 11:22:22,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726005208] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:22,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768016396] [2022-12-13 11:22:22,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:22:22,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:22,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:22,437 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:22,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 11:22:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:22,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 11:22:22,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 306 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:22,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 306 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:22,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768016396] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:22,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:22,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2022-12-13 11:22:22,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99309698] [2022-12-13 11:22:22,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:22,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 11:22:22,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 11:22:22,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=333, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:22:22,795 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 11:22:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:22,964 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2022-12-13 11:22:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 11:22:22,965 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 110 [2022-12-13 11:22:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:22,965 INFO L225 Difference]: With dead ends: 128 [2022-12-13 11:22:22,965 INFO L226 Difference]: Without dead ends: 126 [2022-12-13 11:22:22,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 201 SyntacticMatches, 32 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=679, Invalid=1213, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 11:22:22,966 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 122 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:22,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 166 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-13 11:22:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 119. [2022-12-13 11:22:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 118 states have internal predecessors, (122), 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 11:22:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2022-12-13 11:22:22,973 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 110 [2022-12-13 11:22:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:22,974 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2022-12-13 11:22:22,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 11:22:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2022-12-13 11:22:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 11:22:22,974 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:22,974 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:22,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 11:22:23,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:23,176 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash 804687075, now seen corresponding path program 20 times [2022-12-13 11:22:23,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:23,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182958263] [2022-12-13 11:22:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 597 proven. 357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:23,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:23,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182958263] [2022-12-13 11:22:23,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182958263] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:23,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506797432] [2022-12-13 11:22:23,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:22:23,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:23,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:23,693 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:23,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 11:22:23,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:22:23,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:23,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 11:22:23,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 646 proven. 306 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:24,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 646 proven. 306 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:24,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506797432] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:24,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:24,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 59 [2022-12-13 11:22:24,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703072397] [2022-12-13 11:22:24,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:24,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-13 11:22:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-13 11:22:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2639, Unknown=0, NotChecked=0, Total=3422 [2022-12-13 11:22:24,590 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand has 59 states, 59 states have (on average 3.3559322033898304) internal successors, (198), 59 states have internal predecessors, (198), 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 11:22:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:24,982 INFO L93 Difference]: Finished difference Result 270 states and 310 transitions. [2022-12-13 11:22:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 11:22:24,982 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.3559322033898304) internal successors, (198), 59 states have internal predecessors, (198), 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 11:22:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:24,983 INFO L225 Difference]: With dead ends: 270 [2022-12-13 11:22:24,983 INFO L226 Difference]: Without dead ends: 193 [2022-12-13 11:22:24,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 182 SyntacticMatches, 34 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1469, Invalid=4383, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 11:22:24,984 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 226 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:24,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 398 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:22:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-12-13 11:22:24,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 121. [2022-12-13 11:22:24,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0333333333333334) internal successors, (124), 120 states have internal predecessors, (124), 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 11:22:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2022-12-13 11:22:24,994 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 118 [2022-12-13 11:22:24,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:24,994 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2022-12-13 11:22:24,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.3559322033898304) internal successors, (198), 59 states have internal predecessors, (198), 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 11:22:24,994 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2022-12-13 11:22:24,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 11:22:24,995 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:24,995 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:24,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:25,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 11:22:25,196 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:25,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1574315976, now seen corresponding path program 21 times [2022-12-13 11:22:25,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:25,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649462037] [2022-12-13 11:22:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:25,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 597 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:25,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:25,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649462037] [2022-12-13 11:22:25,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649462037] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:25,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346098421] [2022-12-13 11:22:25,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:22:25,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:25,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:25,753 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:25,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 11:22:25,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-12-13 11:22:25,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:25,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 11:22:25,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 648 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:26,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 648 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:26,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346098421] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:26,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:26,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 61 [2022-12-13 11:22:26,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312936868] [2022-12-13 11:22:26,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:26,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-12-13 11:22:26,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-12-13 11:22:26,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=843, Invalid=2817, Unknown=0, NotChecked=0, Total=3660 [2022-12-13 11:22:26,816 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand has 61 states, 61 states have (on average 3.278688524590164) internal successors, (200), 61 states have internal predecessors, (200), 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 11:22:27,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:27,284 INFO L93 Difference]: Finished difference Result 278 states and 320 transitions. [2022-12-13 11:22:27,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 11:22:27,284 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.278688524590164) internal successors, (200), 61 states have internal predecessors, (200), 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 120 [2022-12-13 11:22:27,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:27,285 INFO L225 Difference]: With dead ends: 278 [2022-12-13 11:22:27,285 INFO L226 Difference]: Without dead ends: 199 [2022-12-13 11:22:27,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 183 SyntacticMatches, 36 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1605, Invalid=4715, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 11:22:27,286 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 257 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:27,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 380 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:22:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-12-13 11:22:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 123. [2022-12-13 11:22:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 122 states have internal predecessors, (126), 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 11:22:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2022-12-13 11:22:27,297 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 120 [2022-12-13 11:22:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:27,297 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2022-12-13 11:22:27,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.278688524590164) internal successors, (200), 61 states have internal predecessors, (200), 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 11:22:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2022-12-13 11:22:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-13 11:22:27,298 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:27,298 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:27,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 11:22:27,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 11:22:27,499 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:27,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:27,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1841652371, now seen corresponding path program 22 times [2022-12-13 11:22:27,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:27,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706999620] [2022-12-13 11:22:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:27,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 342 proven. 686 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:27,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:27,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706999620] [2022-12-13 11:22:27,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706999620] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:27,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076603768] [2022-12-13 11:22:27,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:22:27,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:27,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:27,949 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:27,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 11:22:28,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:22:28,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:28,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 11:22:28,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 380 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:28,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 380 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:28,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076603768] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:28,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:28,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2022-12-13 11:22:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187580574] [2022-12-13 11:22:28,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:28,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 11:22:28,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 11:22:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=388, Unknown=0, NotChecked=0, Total=650 [2022-12-13 11:22:28,462 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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 11:22:28,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:28,706 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2022-12-13 11:22:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 11:22:28,706 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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 122 [2022-12-13 11:22:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:28,707 INFO L225 Difference]: With dead ends: 140 [2022-12-13 11:22:28,707 INFO L226 Difference]: Without dead ends: 138 [2022-12-13 11:22:28,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 223 SyntacticMatches, 36 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=812, Invalid=1444, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 11:22:28,708 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 132 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:28,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 186 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-13 11:22:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 131. [2022-12-13 11:22:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 130 states have internal predecessors, (134), 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 11:22:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2022-12-13 11:22:28,720 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 122 [2022-12-13 11:22:28,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:28,720 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2022-12-13 11:22:28,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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 11:22:28,720 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2022-12-13 11:22:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 11:22:28,721 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:28,721 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:28,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:28,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 11:22:28,922 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:28,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:28,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2067608147, now seen corresponding path program 23 times [2022-12-13 11:22:28,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:28,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81957617] [2022-12-13 11:22:28,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:28,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 743 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:29,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:29,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81957617] [2022-12-13 11:22:29,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81957617] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:29,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089231235] [2022-12-13 11:22:29,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:22:29,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:29,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:29,685 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:29,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 11:22:29,763 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-12-13 11:22:29,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:29,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 11:22:29,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 800 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:30,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 800 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:31,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089231235] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:31,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:31,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 68 [2022-12-13 11:22:31,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565327756] [2022-12-13 11:22:31,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:31,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-13 11:22:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:31,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-13 11:22:31,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1060, Invalid=3496, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 11:22:31,024 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 68 states, 68 states have (on average 3.338235294117647) internal successors, (227), 68 states have internal predecessors, (227), 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 11:22:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:32,056 INFO L93 Difference]: Finished difference Result 385 states and 432 transitions. [2022-12-13 11:22:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-13 11:22:32,056 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.338235294117647) internal successors, (227), 68 states have internal predecessors, (227), 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 130 [2022-12-13 11:22:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:32,058 INFO L225 Difference]: With dead ends: 385 [2022-12-13 11:22:32,058 INFO L226 Difference]: Without dead ends: 219 [2022-12-13 11:22:32,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 37 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3870 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2886, Invalid=8886, Unknown=0, NotChecked=0, Total=11772 [2022-12-13 11:22:32,060 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 408 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:32,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 601 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:22:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-12-13 11:22:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 135. [2022-12-13 11:22:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0298507462686568) internal successors, (138), 134 states have internal predecessors, (138), 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 11:22:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 138 transitions. [2022-12-13 11:22:32,071 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 138 transitions. Word has length 130 [2022-12-13 11:22:32,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:32,071 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 138 transitions. [2022-12-13 11:22:32,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.338235294117647) internal successors, (227), 68 states have internal predecessors, (227), 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 11:22:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 138 transitions. [2022-12-13 11:22:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 11:22:32,072 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:32,072 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:32,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 11:22:32,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:32,273 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:32,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:32,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1519043549, now seen corresponding path program 24 times [2022-12-13 11:22:32,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:32,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307747730] [2022-12-13 11:22:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:32,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 420 proven. 842 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:32,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:32,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307747730] [2022-12-13 11:22:32,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307747730] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:32,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596280763] [2022-12-13 11:22:32,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:22:32,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:32,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:32,756 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:32,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 11:22:32,859 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-12-13 11:22:32,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:32,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 11:22:32,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 462 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:32,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 462 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:33,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596280763] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:33,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:33,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2022-12-13 11:22:33,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389334823] [2022-12-13 11:22:33,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:33,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 11:22:33,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 11:22:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=447, Unknown=0, NotChecked=0, Total=756 [2022-12-13 11:22:33,242 INFO L87 Difference]: Start difference. First operand 135 states and 138 transitions. Second operand has 28 states, 28 states have (on average 5.607142857142857) internal successors, (157), 28 states have internal predecessors, (157), 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 11:22:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:33,471 INFO L93 Difference]: Finished difference Result 152 states and 156 transitions. [2022-12-13 11:22:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 11:22:33,471 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.607142857142857) internal successors, (157), 28 states have internal predecessors, (157), 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 134 [2022-12-13 11:22:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:33,473 INFO L225 Difference]: With dead ends: 152 [2022-12-13 11:22:33,473 INFO L226 Difference]: Without dead ends: 150 [2022-12-13 11:22:33,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 245 SyntacticMatches, 40 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=957, Invalid=1695, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 11:22:33,474 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 146 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:33,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 211 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:33,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-13 11:22:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2022-12-13 11:22:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.028169014084507) internal successors, (146), 142 states have internal predecessors, (146), 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 11:22:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2022-12-13 11:22:33,485 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 134 [2022-12-13 11:22:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:33,485 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2022-12-13 11:22:33,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.607142857142857) internal successors, (157), 28 states have internal predecessors, (157), 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 11:22:33,485 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2022-12-13 11:22:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 11:22:33,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:33,485 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:33,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 11:22:33,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 11:22:33,686 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:33,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash -101193533, now seen corresponding path program 25 times [2022-12-13 11:22:33,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:33,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313885816] [2022-12-13 11:22:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:33,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 905 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:34,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:34,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313885816] [2022-12-13 11:22:34,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313885816] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:34,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228641915] [2022-12-13 11:22:34,495 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:22:34,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:34,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:34,495 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:34,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 11:22:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:34,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 11:22:34,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 966 proven. 462 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:35,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 966 proven. 462 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:35,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228641915] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:35,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:35,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 71 [2022-12-13 11:22:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220393394] [2022-12-13 11:22:35,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:35,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-12-13 11:22:35,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:35,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-12-13 11:22:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=3839, Unknown=0, NotChecked=0, Total=4970 [2022-12-13 11:22:35,690 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 71 states, 71 states have (on average 3.352112676056338) internal successors, (238), 71 states have internal predecessors, (238), 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 11:22:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:36,151 INFO L93 Difference]: Finished difference Result 326 states and 374 transitions. [2022-12-13 11:22:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 11:22:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.352112676056338) internal successors, (238), 71 states have internal predecessors, (238), 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 142 [2022-12-13 11:22:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:36,152 INFO L225 Difference]: With dead ends: 326 [2022-12-13 11:22:36,153 INFO L226 Difference]: Without dead ends: 233 [2022-12-13 11:22:36,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 218 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2145, Invalid=6411, Unknown=0, NotChecked=0, Total=8556 [2022-12-13 11:22:36,154 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 331 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:36,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 459 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:22:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-12-13 11:22:36,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 145. [2022-12-13 11:22:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0277777777777777) internal successors, (148), 144 states have internal predecessors, (148), 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 11:22:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2022-12-13 11:22:36,175 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 142 [2022-12-13 11:22:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:36,176 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2022-12-13 11:22:36,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.352112676056338) internal successors, (238), 71 states have internal predecessors, (238), 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 11:22:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2022-12-13 11:22:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 11:22:36,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:36,177 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:36,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 11:22:36,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 11:22:36,377 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2007079768, now seen corresponding path program 26 times [2022-12-13 11:22:36,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:36,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462575883] [2022-12-13 11:22:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:36,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 905 proven. 569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:37,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462575883] [2022-12-13 11:22:37,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462575883] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:37,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547415336] [2022-12-13 11:22:37,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:22:37,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:37,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:37,146 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:37,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 11:22:37,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:22:37,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:37,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 11:22:37,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 968 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:38,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 968 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:38,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547415336] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:38,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:38,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 73 [2022-12-13 11:22:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294028559] [2022-12-13 11:22:38,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-12-13 11:22:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-12-13 11:22:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=4053, Unknown=0, NotChecked=0, Total=5256 [2022-12-13 11:22:38,648 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand has 73 states, 73 states have (on average 3.287671232876712) internal successors, (240), 73 states have internal predecessors, (240), 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 11:22:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:39,221 INFO L93 Difference]: Finished difference Result 334 states and 384 transitions. [2022-12-13 11:22:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 11:22:39,221 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.287671232876712) internal successors, (240), 73 states have internal predecessors, (240), 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 144 [2022-12-13 11:22:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:39,222 INFO L225 Difference]: With dead ends: 334 [2022-12-13 11:22:39,222 INFO L226 Difference]: Without dead ends: 239 [2022-12-13 11:22:39,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 219 SyntacticMatches, 44 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3380 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2309, Invalid=6811, Unknown=0, NotChecked=0, Total=9120 [2022-12-13 11:22:39,224 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 266 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:39,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 480 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:22:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-13 11:22:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 147. [2022-12-13 11:22:39,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 146 states have internal predecessors, (150), 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 11:22:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2022-12-13 11:22:39,243 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 144 [2022-12-13 11:22:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:39,244 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2022-12-13 11:22:39,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.287671232876712) internal successors, (240), 73 states have internal predecessors, (240), 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 11:22:39,244 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2022-12-13 11:22:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 11:22:39,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:39,244 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:39,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 11:22:39,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 11:22:39,445 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash 387283789, now seen corresponding path program 27 times [2022-12-13 11:22:39,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:39,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595312610] [2022-12-13 11:22:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 506 proven. 1014 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:40,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:40,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595312610] [2022-12-13 11:22:40,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595312610] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:40,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665508745] [2022-12-13 11:22:40,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:22:40,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:40,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:40,036 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:40,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 11:22:40,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-12-13 11:22:40,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:40,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-13 11:22:40,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 552 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:40,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 552 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:40,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665508745] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:40,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:40,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2022-12-13 11:22:40,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912927273] [2022-12-13 11:22:40,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:40,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 11:22:40,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 11:22:40,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=510, Unknown=0, NotChecked=0, Total=870 [2022-12-13 11:22:40,756 INFO L87 Difference]: Start difference. First operand 147 states and 150 transitions. Second operand has 30 states, 30 states have (on average 5.633333333333334) internal successors, (169), 30 states have internal predecessors, (169), 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 11:22:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:41,069 INFO L93 Difference]: Finished difference Result 164 states and 168 transitions. [2022-12-13 11:22:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 11:22:41,069 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.633333333333334) internal successors, (169), 30 states have internal predecessors, (169), 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 146 [2022-12-13 11:22:41,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:41,071 INFO L225 Difference]: With dead ends: 164 [2022-12-13 11:22:41,071 INFO L226 Difference]: Without dead ends: 162 [2022-12-13 11:22:41,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 267 SyntacticMatches, 44 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1114, Invalid=1966, Unknown=0, NotChecked=0, Total=3080 [2022-12-13 11:22:41,072 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 162 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:41,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 213 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:41,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-12-13 11:22:41,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 155. [2022-12-13 11:22:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.025974025974026) internal successors, (158), 154 states have internal predecessors, (158), 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 11:22:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2022-12-13 11:22:41,084 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 146 [2022-12-13 11:22:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:41,085 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2022-12-13 11:22:41,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.633333333333334) internal successors, (169), 30 states have internal predecessors, (169), 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 11:22:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2022-12-13 11:22:41,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 11:22:41,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:41,085 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:41,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:41,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:41,287 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1439445043, now seen corresponding path program 28 times [2022-12-13 11:22:41,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:41,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352875468] [2022-12-13 11:22:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1083 proven. 621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:42,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:42,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352875468] [2022-12-13 11:22:42,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352875468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:42,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654329480] [2022-12-13 11:22:42,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:22:42,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:42,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:42,104 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:42,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 11:22:42,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:22:42,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:42,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 11:22:42,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1152 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:43,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1704 backedges. 1152 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:43,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654329480] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:43,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:43,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 80 [2022-12-13 11:22:43,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025835068] [2022-12-13 11:22:43,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:43,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-12-13 11:22:43,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:43,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-12-13 11:22:43,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1460, Invalid=4860, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 11:22:43,593 INFO L87 Difference]: Start difference. First operand 155 states and 158 transitions. Second operand has 80 states, 80 states have (on average 3.3375) internal successors, (267), 80 states have internal predecessors, (267), 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 11:22:44,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:44,484 INFO L93 Difference]: Finished difference Result 457 states and 512 transitions. [2022-12-13 11:22:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-13 11:22:44,484 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.3375) internal successors, (267), 80 states have internal predecessors, (267), 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 154 [2022-12-13 11:22:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:44,485 INFO L225 Difference]: With dead ends: 457 [2022-12-13 11:22:44,485 INFO L226 Difference]: Without dead ends: 259 [2022-12-13 11:22:44,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 234 SyntacticMatches, 45 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5464 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4034, Invalid=12478, Unknown=0, NotChecked=0, Total=16512 [2022-12-13 11:22:44,486 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 389 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:44,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 766 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:22:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-12-13 11:22:44,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 159. [2022-12-13 11:22:44,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.0253164556962024) internal successors, (162), 158 states have internal predecessors, (162), 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 11:22:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 162 transitions. [2022-12-13 11:22:44,499 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 162 transitions. Word has length 154 [2022-12-13 11:22:44,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:44,499 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 162 transitions. [2022-12-13 11:22:44,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.3375) internal successors, (267), 80 states have internal predecessors, (267), 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 11:22:44,499 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 162 transitions. [2022-12-13 11:22:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 11:22:44,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:44,500 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:44,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-13 11:22:44,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:44,701 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:44,703 INFO L85 PathProgramCache]: Analyzing trace with hash -71285827, now seen corresponding path program 29 times [2022-12-13 11:22:44,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:44,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340100806] [2022-12-13 11:22:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:44,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 600 proven. 1202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:45,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:45,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340100806] [2022-12-13 11:22:45,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340100806] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:45,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238057960] [2022-12-13 11:22:45,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:22:45,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:45,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:45,317 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:45,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 11:22:45,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-12-13 11:22:45,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:45,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-13 11:22:45,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 650 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:45,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 650 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:45,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238057960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:45,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:45,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2022-12-13 11:22:45,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017335319] [2022-12-13 11:22:45,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:45,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 11:22:45,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 11:22:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=577, Unknown=0, NotChecked=0, Total=992 [2022-12-13 11:22:45,923 INFO L87 Difference]: Start difference. First operand 159 states and 162 transitions. Second operand has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 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 11:22:46,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:46,219 INFO L93 Difference]: Finished difference Result 176 states and 180 transitions. [2022-12-13 11:22:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 11:22:46,219 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 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 158 [2022-12-13 11:22:46,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:46,220 INFO L225 Difference]: With dead ends: 176 [2022-12-13 11:22:46,220 INFO L226 Difference]: Without dead ends: 174 [2022-12-13 11:22:46,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 289 SyntacticMatches, 48 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1283, Invalid=2257, Unknown=0, NotChecked=0, Total=3540 [2022-12-13 11:22:46,221 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 96 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:46,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 316 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-12-13 11:22:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2022-12-13 11:22:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.0240963855421688) internal successors, (170), 166 states have internal predecessors, (170), 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 11:22:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 170 transitions. [2022-12-13 11:22:46,235 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 170 transitions. Word has length 158 [2022-12-13 11:22:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:46,236 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 170 transitions. [2022-12-13 11:22:46,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 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 11:22:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 170 transitions. [2022-12-13 11:22:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 11:22:46,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:46,236 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:46,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:46,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 11:22:46,437 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:46,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1159694499, now seen corresponding path program 30 times [2022-12-13 11:22:46,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:46,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310520617] [2022-12-13 11:22:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:46,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 1277 proven. 725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:47,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:47,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310520617] [2022-12-13 11:22:47,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310520617] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:47,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17639739] [2022-12-13 11:22:47,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:22:47,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:47,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:47,614 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:47,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 11:22:47,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-12-13 11:22:47,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:47,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-13 11:22:47,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 1352 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:48,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 1352 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:49,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17639739] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:49,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:49,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 86 [2022-12-13 11:22:49,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005183320] [2022-12-13 11:22:49,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:49,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-12-13 11:22:49,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:49,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-12-13 11:22:49,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5626, Unknown=0, NotChecked=0, Total=7310 [2022-12-13 11:22:49,686 INFO L87 Difference]: Start difference. First operand 167 states and 170 transitions. Second operand has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 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 11:22:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:51,064 INFO L93 Difference]: Finished difference Result 493 states and 552 transitions. [2022-12-13 11:22:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-13 11:22:51,064 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 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 166 [2022-12-13 11:22:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:51,064 INFO L225 Difference]: With dead ends: 493 [2022-12-13 11:22:51,065 INFO L226 Difference]: Without dead ends: 279 [2022-12-13 11:22:51,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 252 SyntacticMatches, 49 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6363 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4680, Invalid=14502, Unknown=0, NotChecked=0, Total=19182 [2022-12-13 11:22:51,066 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 404 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:51,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 838 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:22:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-12-13 11:22:51,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 171. [2022-12-13 11:22:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 170 states have internal predecessors, (174), 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 11:22:51,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2022-12-13 11:22:51,080 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 166 [2022-12-13 11:22:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:51,080 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2022-12-13 11:22:51,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.3372093023255816) internal successors, (287), 86 states have internal predecessors, (287), 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 11:22:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2022-12-13 11:22:51,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-12-13 11:22:51,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:51,081 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:51,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-12-13 11:22:51,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 11:22:51,282 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:51,283 INFO L85 PathProgramCache]: Analyzing trace with hash -382690003, now seen corresponding path program 31 times [2022-12-13 11:22:51,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:51,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235387766] [2022-12-13 11:22:51,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:51,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 702 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:52,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:52,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235387766] [2022-12-13 11:22:52,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235387766] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:52,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875031221] [2022-12-13 11:22:52,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:22:52,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:52,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:52,006 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:52,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 11:22:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:52,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 11:22:52,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 756 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:52,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 756 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:52,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875031221] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:52,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:52,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2022-12-13 11:22:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742232363] [2022-12-13 11:22:52,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:52,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 11:22:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 11:22:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=648, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 11:22:52,726 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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 11:22:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:53,045 INFO L93 Difference]: Finished difference Result 188 states and 192 transitions. [2022-12-13 11:22:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-13 11:22:53,045 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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 170 [2022-12-13 11:22:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:53,046 INFO L225 Difference]: With dead ends: 188 [2022-12-13 11:22:53,046 INFO L226 Difference]: Without dead ends: 186 [2022-12-13 11:22:53,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 311 SyntacticMatches, 52 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1464, Invalid=2568, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 11:22:53,047 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 98 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:53,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 266 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:22:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-13 11:22:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 179. [2022-12-13 11:22:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.0224719101123596) internal successors, (182), 178 states have internal predecessors, (182), 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 11:22:53,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 182 transitions. [2022-12-13 11:22:53,062 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 182 transitions. Word has length 170 [2022-12-13 11:22:53,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:53,062 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 182 transitions. [2022-12-13 11:22:53,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.676470588235294) internal successors, (193), 34 states have internal predecessors, (193), 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 11:22:53,062 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 182 transitions. [2022-12-13 11:22:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 11:22:53,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:53,063 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:53,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-13 11:22:53,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:53,264 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:53,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1796698643, now seen corresponding path program 32 times [2022-12-13 11:22:53,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:53,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004311586] [2022-12-13 11:22:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:53,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 1487 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:54,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:54,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004311586] [2022-12-13 11:22:54,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004311586] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:54,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129436415] [2022-12-13 11:22:54,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:22:54,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:54,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:54,458 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:54,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 11:22:54,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:22:54,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:54,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 11:22:54,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 1566 proven. 756 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:55,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:22:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2324 backedges. 1566 proven. 756 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:22:56,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129436415] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:22:56,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:22:56,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 89 [2022-12-13 11:22:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957282607] [2022-12-13 11:22:56,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:22:56,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-12-13 11:22:56,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:22:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-12-13 11:22:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=6059, Unknown=0, NotChecked=0, Total=7832 [2022-12-13 11:22:56,106 INFO L87 Difference]: Start difference. First operand 179 states and 182 transitions. Second operand has 89 states, 89 states have (on average 3.348314606741573) internal successors, (298), 89 states have internal predecessors, (298), 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 11:22:56,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:22:56,790 INFO L93 Difference]: Finished difference Result 410 states and 470 transitions. [2022-12-13 11:22:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 11:22:56,791 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.348314606741573) internal successors, (298), 89 states have internal predecessors, (298), 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 178 [2022-12-13 11:22:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:22:56,792 INFO L225 Difference]: With dead ends: 410 [2022-12-13 11:22:56,793 INFO L226 Difference]: Without dead ends: 293 [2022-12-13 11:22:56,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 272 SyntacticMatches, 54 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3399, Invalid=10173, Unknown=0, NotChecked=0, Total=13572 [2022-12-13 11:22:56,794 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 376 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:22:56,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 663 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:22:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-12-13 11:22:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 181. [2022-12-13 11:22:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.0222222222222221) internal successors, (184), 180 states have internal predecessors, (184), 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 11:22:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 184 transitions. [2022-12-13 11:22:56,812 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 184 transitions. Word has length 178 [2022-12-13 11:22:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:22:56,812 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 184 transitions. [2022-12-13 11:22:56,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.348314606741573) internal successors, (298), 89 states have internal predecessors, (298), 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 11:22:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 184 transitions. [2022-12-13 11:22:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-13 11:22:56,813 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:22:56,813 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:22:56,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 11:22:57,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:57,014 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:22:57,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:22:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1983684472, now seen corresponding path program 33 times [2022-12-13 11:22:57,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:22:57,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489884675] [2022-12-13 11:22:57,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:22:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:22:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:22:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1487 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:58,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:22:58,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489884675] [2022-12-13 11:22:58,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489884675] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:22:58,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846364016] [2022-12-13 11:22:58,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:22:58,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:22:58,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:22:58,155 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:22:58,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-13 11:22:58,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-12-13 11:22:58,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:22:58,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 11:22:58,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:22:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1568 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:22:59,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 1568 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:00,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846364016] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:00,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:00,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 91 [2022-12-13 11:23:00,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805487439] [2022-12-13 11:23:00,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:00,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-12-13 11:23:00,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:00,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-12-13 11:23:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1863, Invalid=6327, Unknown=0, NotChecked=0, Total=8190 [2022-12-13 11:23:00,145 INFO L87 Difference]: Start difference. First operand 181 states and 184 transitions. Second operand has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 states have internal predecessors, (300), 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 11:23:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:01,032 INFO L93 Difference]: Finished difference Result 418 states and 480 transitions. [2022-12-13 11:23:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 11:23:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 states have internal predecessors, (300), 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 180 [2022-12-13 11:23:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:01,034 INFO L225 Difference]: With dead ends: 418 [2022-12-13 11:23:01,035 INFO L226 Difference]: Without dead ends: 299 [2022-12-13 11:23:01,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 273 SyntacticMatches, 56 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5312 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3605, Invalid=10675, Unknown=0, NotChecked=0, Total=14280 [2022-12-13 11:23:01,036 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 479 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:01,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 624 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:23:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-12-13 11:23:01,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 183. [2022-12-13 11:23:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.021978021978022) internal successors, (186), 182 states have internal predecessors, (186), 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 11:23:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 186 transitions. [2022-12-13 11:23:01,062 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 186 transitions. Word has length 180 [2022-12-13 11:23:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:01,062 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 186 transitions. [2022-12-13 11:23:01,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 states have internal predecessors, (300), 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 11:23:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 186 transitions. [2022-12-13 11:23:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-12-13 11:23:01,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:01,063 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:01,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-12-13 11:23:01,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 11:23:01,264 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:01,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:01,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1288439709, now seen corresponding path program 34 times [2022-12-13 11:23:01,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:01,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815983439] [2022-12-13 11:23:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:01,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 812 proven. 1626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:02,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815983439] [2022-12-13 11:23:02,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815983439] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:02,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381824409] [2022-12-13 11:23:02,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:23:02,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:02,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:02,135 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:02,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-13 11:23:02,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:23:02,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:02,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-13 11:23:02,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 870 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:02,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2438 backedges. 870 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:02,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381824409] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:02,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:02,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2022-12-13 11:23:02,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739638083] [2022-12-13 11:23:02,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:02,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 11:23:02,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 11:23:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=723, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 11:23:02,955 INFO L87 Difference]: Start difference. First operand 183 states and 186 transitions. Second operand has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 36 states have internal predecessors, (205), 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 11:23:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:03,389 INFO L93 Difference]: Finished difference Result 200 states and 204 transitions. [2022-12-13 11:23:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 11:23:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 36 states have internal predecessors, (205), 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 182 [2022-12-13 11:23:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:03,391 INFO L225 Difference]: With dead ends: 200 [2022-12-13 11:23:03,391 INFO L226 Difference]: Without dead ends: 198 [2022-12-13 11:23:03,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 333 SyntacticMatches, 56 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1657, Invalid=2899, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 11:23:03,392 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 102 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:03,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 287 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:23:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-12-13 11:23:03,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 191. [2022-12-13 11:23:03,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0210526315789474) internal successors, (194), 190 states have internal predecessors, (194), 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 11:23:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 194 transitions. [2022-12-13 11:23:03,410 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 194 transitions. Word has length 182 [2022-12-13 11:23:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:03,410 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 194 transitions. [2022-12-13 11:23:03,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.694444444444445) internal successors, (205), 36 states have internal predecessors, (205), 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 11:23:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 194 transitions. [2022-12-13 11:23:03,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-12-13 11:23:03,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:03,411 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:03,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-12-13 11:23:03,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-13 11:23:03,612 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash 932801667, now seen corresponding path program 35 times [2022-12-13 11:23:03,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:03,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173747419] [2022-12-13 11:23:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:03,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 1713 proven. 957 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:04,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:04,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173747419] [2022-12-13 11:23:04,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173747419] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:04,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219335591] [2022-12-13 11:23:04,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:23:04,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:04,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:04,846 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:04,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-13 11:23:04,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-12-13 11:23:04,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:04,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 11:23:04,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 1800 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:06,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 1800 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:06,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219335591] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:06,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:06,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 98 [2022-12-13 11:23:06,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995931162] [2022-12-13 11:23:06,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:06,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-12-13 11:23:06,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:06,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-12-13 11:23:06,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2180, Invalid=7326, Unknown=0, NotChecked=0, Total=9506 [2022-12-13 11:23:06,791 INFO L87 Difference]: Start difference. First operand 191 states and 194 transitions. Second operand has 98 states, 98 states have (on average 3.336734693877551) internal successors, (327), 98 states have internal predecessors, (327), 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 11:23:08,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:08,085 INFO L93 Difference]: Finished difference Result 565 states and 632 transitions. [2022-12-13 11:23:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-12-13 11:23:08,085 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.336734693877551) internal successors, (327), 98 states have internal predecessors, (327), 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 190 [2022-12-13 11:23:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:08,086 INFO L225 Difference]: With dead ends: 565 [2022-12-13 11:23:08,086 INFO L226 Difference]: Without dead ends: 319 [2022-12-13 11:23:08,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 288 SyntacticMatches, 57 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8365 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=6116, Invalid=19006, Unknown=0, NotChecked=0, Total=25122 [2022-12-13 11:23:08,087 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 528 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:08,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 902 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:23:08,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-12-13 11:23:08,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 195. [2022-12-13 11:23:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0206185567010309) internal successors, (198), 194 states have internal predecessors, (198), 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 11:23:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 198 transitions. [2022-12-13 11:23:08,104 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 198 transitions. Word has length 190 [2022-12-13 11:23:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:08,105 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 198 transitions. [2022-12-13 11:23:08,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.336734693877551) internal successors, (327), 98 states have internal predecessors, (327), 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 11:23:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 198 transitions. [2022-12-13 11:23:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-12-13 11:23:08,105 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:08,105 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:08,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-12-13 11:23:08,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 11:23:08,307 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:08,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash 12059405, now seen corresponding path program 36 times [2022-12-13 11:23:08,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:08,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047515658] [2022-12-13 11:23:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:08,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 930 proven. 1862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:09,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:09,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047515658] [2022-12-13 11:23:09,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047515658] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:09,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092783842] [2022-12-13 11:23:09,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:23:09,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:09,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:09,214 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:09,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-13 11:23:09,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2022-12-13 11:23:09,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:09,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 68 conjunts are in the unsatisfiable core [2022-12-13 11:23:09,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 992 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:09,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2792 backedges. 992 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:09,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092783842] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:09,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:09,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2022-12-13 11:23:09,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063986982] [2022-12-13 11:23:10,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:10,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-13 11:23:10,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:10,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-13 11:23:10,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=802, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 11:23:10,001 INFO L87 Difference]: Start difference. First operand 195 states and 198 transitions. Second operand has 38 states, 38 states have (on average 5.7105263157894735) internal successors, (217), 38 states have internal predecessors, (217), 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 11:23:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:10,348 INFO L93 Difference]: Finished difference Result 212 states and 216 transitions. [2022-12-13 11:23:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-13 11:23:10,349 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.7105263157894735) internal successors, (217), 38 states have internal predecessors, (217), 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 194 [2022-12-13 11:23:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:10,350 INFO L225 Difference]: With dead ends: 212 [2022-12-13 11:23:10,350 INFO L226 Difference]: Without dead ends: 210 [2022-12-13 11:23:10,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 355 SyntacticMatches, 60 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2376 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1862, Invalid=3250, Unknown=0, NotChecked=0, Total=5112 [2022-12-13 11:23:10,351 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 206 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:10,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 299 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:23:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-12-13 11:23:10,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 203. [2022-12-13 11:23:10,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.0198019801980198) internal successors, (206), 202 states have internal predecessors, (206), 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 11:23:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 206 transitions. [2022-12-13 11:23:10,371 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 206 transitions. Word has length 194 [2022-12-13 11:23:10,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:10,371 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 206 transitions. [2022-12-13 11:23:10,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.7105263157894735) internal successors, (217), 38 states have internal predecessors, (217), 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 11:23:10,372 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 206 transitions. [2022-12-13 11:23:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-13 11:23:10,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:10,372 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:10,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-12-13 11:23:10,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 11:23:10,573 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash -951388173, now seen corresponding path program 37 times [2022-12-13 11:23:10,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:10,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136376029] [2022-12-13 11:23:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:10,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 1955 proven. 1085 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:12,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:12,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136376029] [2022-12-13 11:23:12,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136376029] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:12,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491882454] [2022-12-13 11:23:12,140 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:23:12,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:12,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:12,141 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:12,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-12-13 11:23:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:12,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 11:23:12,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 2046 proven. 992 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:23:13,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3040 backedges. 2046 proven. 992 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:23:14,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491882454] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:14,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:14,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 101 [2022-12-13 11:23:14,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21037938] [2022-12-13 11:23:14,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:14,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-12-13 11:23:14,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:14,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-12-13 11:23:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=7819, Unknown=0, NotChecked=0, Total=10100 [2022-12-13 11:23:14,287 INFO L87 Difference]: Start difference. First operand 203 states and 206 transitions. Second operand has 101 states, 101 states have (on average 3.3465346534653464) internal successors, (338), 101 states have internal predecessors, (338), 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 11:23:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:15,317 INFO L93 Difference]: Finished difference Result 466 states and 534 transitions. [2022-12-13 11:23:15,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 11:23:15,317 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.3465346534653464) internal successors, (338), 101 states have internal predecessors, (338), 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 202 [2022-12-13 11:23:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:15,319 INFO L225 Difference]: With dead ends: 466 [2022-12-13 11:23:15,319 INFO L226 Difference]: Without dead ends: 333 [2022-12-13 11:23:15,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 308 SyntacticMatches, 62 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4395, Invalid=13161, Unknown=0, NotChecked=0, Total=17556 [2022-12-13 11:23:15,321 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 436 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:15,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 720 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:23:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-12-13 11:23:15,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 205. [2022-12-13 11:23:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.0196078431372548) internal successors, (208), 204 states have internal predecessors, (208), 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 11:23:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2022-12-13 11:23:15,357 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 202 [2022-12-13 11:23:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:15,357 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2022-12-13 11:23:15,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.3465346534653464) internal successors, (338), 101 states have internal predecessors, (338), 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 11:23:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2022-12-13 11:23:15,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-12-13 11:23:15,358 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:15,358 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:15,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-12-13 11:23:15,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-13 11:23:15,560 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1744337320, now seen corresponding path program 38 times [2022-12-13 11:23:15,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:15,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159097623] [2022-12-13 11:23:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:15,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 1955 proven. 1149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:17,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159097623] [2022-12-13 11:23:17,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159097623] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274129448] [2022-12-13 11:23:17,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:23:17,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:17,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:17,140 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:17,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-12-13 11:23:17,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:23:17,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:17,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 68 conjunts are in the unsatisfiable core [2022-12-13 11:23:17,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 2048 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:18,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 2048 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:19,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274129448] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:19,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:19,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 103 [2022-12-13 11:23:19,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618307697] [2022-12-13 11:23:19,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:19,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-12-13 11:23:19,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:19,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-12-13 11:23:19,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2383, Invalid=8123, Unknown=0, NotChecked=0, Total=10506 [2022-12-13 11:23:19,364 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand has 103 states, 103 states have (on average 3.3009708737864076) internal successors, (340), 103 states have internal predecessors, (340), 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 11:23:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:20,444 INFO L93 Difference]: Finished difference Result 474 states and 544 transitions. [2022-12-13 11:23:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 11:23:20,444 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.3009708737864076) internal successors, (340), 103 states have internal predecessors, (340), 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 204 [2022-12-13 11:23:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:20,445 INFO L225 Difference]: With dead ends: 474 [2022-12-13 11:23:20,445 INFO L226 Difference]: Without dead ends: 339 [2022-12-13 11:23:20,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 309 SyntacticMatches, 64 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6840 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4629, Invalid=13731, Unknown=0, NotChecked=0, Total=18360 [2022-12-13 11:23:20,446 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 616 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:20,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 699 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:23:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-12-13 11:23:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 207. [2022-12-13 11:23:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0194174757281553) internal successors, (210), 206 states have internal predecessors, (210), 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 11:23:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 210 transitions. [2022-12-13 11:23:20,479 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 210 transitions. Word has length 204 [2022-12-13 11:23:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:20,479 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 210 transitions. [2022-12-13 11:23:20,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.3009708737864076) internal successors, (340), 103 states have internal predecessors, (340), 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 11:23:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 210 transitions. [2022-12-13 11:23:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-12-13 11:23:20,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:20,480 INFO L195 NwaCegarLoop]: trace histogram [34, 33, 33, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:20,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-12-13 11:23:20,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:20,682 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash 735711101, now seen corresponding path program 39 times [2022-12-13 11:23:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:20,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147437414] [2022-12-13 11:23:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3170 backedges. 1056 proven. 2114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:21,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:21,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147437414] [2022-12-13 11:23:21,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147437414] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:21,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66948408] [2022-12-13 11:23:21,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:23:21,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:21,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:21,739 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:21,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-13 11:23:21,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2022-12-13 11:23:21,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:21,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-13 11:23:21,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3170 backedges. 1122 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:22,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3170 backedges. 1122 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:22,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66948408] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:22,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:22,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2022-12-13 11:23:22,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708546758] [2022-12-13 11:23:22,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:22,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 11:23:22,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:22,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 11:23:22,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=885, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 11:23:22,702 INFO L87 Difference]: Start difference. First operand 207 states and 210 transitions. Second operand has 40 states, 40 states have (on average 5.725) internal successors, (229), 40 states have internal predecessors, (229), 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 11:23:23,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:23,222 INFO L93 Difference]: Finished difference Result 224 states and 228 transitions. [2022-12-13 11:23:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-13 11:23:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.725) internal successors, (229), 40 states have internal predecessors, (229), 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 206 [2022-12-13 11:23:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:23,223 INFO L225 Difference]: With dead ends: 224 [2022-12-13 11:23:23,223 INFO L226 Difference]: Without dead ends: 222 [2022-12-13 11:23:23,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 377 SyntacticMatches, 64 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2079, Invalid=3621, Unknown=0, NotChecked=0, Total=5700 [2022-12-13 11:23:23,224 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 116 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:23,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 311 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:23:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-12-13 11:23:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 215. [2022-12-13 11:23:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0186915887850467) internal successors, (218), 214 states have internal predecessors, (218), 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 11:23:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 218 transitions. [2022-12-13 11:23:23,244 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 218 transitions. Word has length 206 [2022-12-13 11:23:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:23,244 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 218 transitions. [2022-12-13 11:23:23,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.725) internal successors, (229), 40 states have internal predecessors, (229), 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 11:23:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 218 transitions. [2022-12-13 11:23:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-12-13 11:23:23,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:23,245 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:23,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-12-13 11:23:23,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:23,446 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1013869469, now seen corresponding path program 40 times [2022-12-13 11:23:23,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:23,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055379987] [2022-12-13 11:23:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:23,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 2213 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:25,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:25,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055379987] [2022-12-13 11:23:25,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055379987] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:25,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56516120] [2022-12-13 11:23:25,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:23:25,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:25,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:25,135 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:25,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-13 11:23:25,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:23:25,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:25,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-13 11:23:25,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 2312 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:26,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 2312 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:27,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56516120] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:27,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:27,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 110 [2022-12-13 11:23:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549437405] [2022-12-13 11:23:27,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:27,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-12-13 11:23:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:27,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-12-13 11:23:27,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2740, Invalid=9250, Unknown=0, NotChecked=0, Total=11990 [2022-12-13 11:23:27,694 INFO L87 Difference]: Start difference. First operand 215 states and 218 transitions. Second operand has 110 states, 110 states have (on average 3.3363636363636364) internal successors, (367), 110 states have internal predecessors, (367), 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 11:23:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:29,712 INFO L93 Difference]: Finished difference Result 637 states and 712 transitions. [2022-12-13 11:23:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-13 11:23:29,712 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.3363636363636364) internal successors, (367), 110 states have internal predecessors, (367), 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 214 [2022-12-13 11:23:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:29,714 INFO L225 Difference]: With dead ends: 637 [2022-12-13 11:23:29,714 INFO L226 Difference]: Without dead ends: 359 [2022-12-13 11:23:29,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 324 SyntacticMatches, 65 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10639 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=7744, Invalid=24118, Unknown=0, NotChecked=0, Total=31862 [2022-12-13 11:23:29,716 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 597 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:29,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1155 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 11:23:29,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-12-13 11:23:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 219. [2022-12-13 11:23:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.018348623853211) internal successors, (222), 218 states have internal predecessors, (222), 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 11:23:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2022-12-13 11:23:29,737 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 214 [2022-12-13 11:23:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:29,738 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2022-12-13 11:23:29,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.3363636363636364) internal successors, (367), 110 states have internal predecessors, (367), 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 11:23:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2022-12-13 11:23:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-12-13 11:23:29,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:29,739 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 35, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:29,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-12-13 11:23:29,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:29,940 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:29,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash 567782637, now seen corresponding path program 41 times [2022-12-13 11:23:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:29,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178104724] [2022-12-13 11:23:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:29,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1190 proven. 2382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:31,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:31,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178104724] [2022-12-13 11:23:31,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178104724] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:31,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684962778] [2022-12-13 11:23:31,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:23:31,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:31,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:31,207 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:31,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-13 11:23:31,347 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2022-12-13 11:23:31,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:31,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-13 11:23:31,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1260 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:31,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3572 backedges. 1260 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:32,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684962778] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:32,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:32,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2022-12-13 11:23:32,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694044977] [2022-12-13 11:23:32,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:32,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-13 11:23:32,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:32,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-13 11:23:32,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=750, Invalid=972, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 11:23:32,287 INFO L87 Difference]: Start difference. First operand 219 states and 222 transitions. Second operand has 42 states, 42 states have (on average 5.738095238095238) internal successors, (241), 42 states have internal predecessors, (241), 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 11:23:32,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:32,820 INFO L93 Difference]: Finished difference Result 236 states and 240 transitions. [2022-12-13 11:23:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-13 11:23:32,820 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.738095238095238) internal successors, (241), 42 states have internal predecessors, (241), 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 218 [2022-12-13 11:23:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:32,821 INFO L225 Difference]: With dead ends: 236 [2022-12-13 11:23:32,821 INFO L226 Difference]: Without dead ends: 234 [2022-12-13 11:23:32,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 399 SyntacticMatches, 68 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2964 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2308, Invalid=4012, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 11:23:32,822 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 122 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:32,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 359 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:23:32,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-12-13 11:23:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 227. [2022-12-13 11:23:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.0176991150442478) internal successors, (230), 226 states have internal predecessors, (230), 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 11:23:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 230 transitions. [2022-12-13 11:23:32,845 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 230 transitions. Word has length 218 [2022-12-13 11:23:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:32,845 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 230 transitions. [2022-12-13 11:23:32,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.738095238095238) internal successors, (241), 42 states have internal predecessors, (241), 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 11:23:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 230 transitions. [2022-12-13 11:23:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-12-13 11:23:32,846 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:32,846 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:32,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-12-13 11:23:33,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:33,047 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1116914131, now seen corresponding path program 42 times [2022-12-13 11:23:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:33,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695191525] [2022-12-13 11:23:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 2487 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:35,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:35,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695191525] [2022-12-13 11:23:35,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695191525] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:35,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861865140] [2022-12-13 11:23:35,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:23:35,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:35,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:35,066 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:35,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-12-13 11:23:35,214 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-12-13 11:23:35,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:35,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-13 11:23:35,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 2592 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:36,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3852 backedges. 2592 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:37,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861865140] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:37,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:37,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 116 [2022-12-13 11:23:37,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601356085] [2022-12-13 11:23:37,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:37,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-12-13 11:23:37,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-12-13 11:23:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3044, Invalid=10296, Unknown=0, NotChecked=0, Total=13340 [2022-12-13 11:23:37,695 INFO L87 Difference]: Start difference. First operand 227 states and 230 transitions. Second operand has 116 states, 116 states have (on average 3.336206896551724) internal successors, (387), 116 states have internal predecessors, (387), 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 11:23:40,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:40,007 INFO L93 Difference]: Finished difference Result 673 states and 752 transitions. [2022-12-13 11:23:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-12-13 11:23:40,007 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 3.336206896551724) internal successors, (387), 116 states have internal predecessors, (387), 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 226 [2022-12-13 11:23:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:40,010 INFO L225 Difference]: With dead ends: 673 [2022-12-13 11:23:40,010 INFO L226 Difference]: Without dead ends: 379 [2022-12-13 11:23:40,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 342 SyntacticMatches, 69 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11878 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8630, Invalid=26902, Unknown=0, NotChecked=0, Total=35532 [2022-12-13 11:23:40,012 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 781 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:40,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1310 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 11:23:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-12-13 11:23:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 231. [2022-12-13 11:23:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.017391304347826) internal successors, (234), 230 states have internal predecessors, (234), 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 11:23:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 234 transitions. [2022-12-13 11:23:40,046 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 234 transitions. Word has length 226 [2022-12-13 11:23:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:40,046 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 234 transitions. [2022-12-13 11:23:40,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 3.336206896551724) internal successors, (387), 116 states have internal predecessors, (387), 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 11:23:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 234 transitions. [2022-12-13 11:23:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-12-13 11:23:40,047 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:40,047 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 37, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:40,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-12-13 11:23:40,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-12-13 11:23:40,248 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:40,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1125538653, now seen corresponding path program 43 times [2022-12-13 11:23:40,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:40,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466186891] [2022-12-13 11:23:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:40,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3998 backedges. 1332 proven. 2666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:41,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:41,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466186891] [2022-12-13 11:23:41,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466186891] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:41,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736175] [2022-12-13 11:23:41,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:23:41,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:41,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:41,643 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:41,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-12-13 11:23:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:41,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-13 11:23:41,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:41,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3998 backedges. 1406 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:41,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3998 backedges. 1406 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:42,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736175] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:42,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:42,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2022-12-13 11:23:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409382529] [2022-12-13 11:23:42,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:42,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-13 11:23:42,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-13 11:23:42,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=1063, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 11:23:42,847 INFO L87 Difference]: Start difference. First operand 231 states and 234 transitions. Second operand has 44 states, 44 states have (on average 5.75) internal successors, (253), 44 states have internal predecessors, (253), 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 11:23:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:43,399 INFO L93 Difference]: Finished difference Result 248 states and 252 transitions. [2022-12-13 11:23:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-13 11:23:43,399 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.75) internal successors, (253), 44 states have internal predecessors, (253), 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 230 [2022-12-13 11:23:43,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:43,401 INFO L225 Difference]: With dead ends: 248 [2022-12-13 11:23:43,401 INFO L226 Difference]: Without dead ends: 246 [2022-12-13 11:23:43,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 421 SyntacticMatches, 72 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3282 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2549, Invalid=4423, Unknown=0, NotChecked=0, Total=6972 [2022-12-13 11:23:43,402 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 244 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:43,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 339 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:23:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-12-13 11:23:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 239. [2022-12-13 11:23:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.0168067226890756) internal successors, (242), 238 states have internal predecessors, (242), 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 11:23:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 242 transitions. [2022-12-13 11:23:43,427 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 242 transitions. Word has length 230 [2022-12-13 11:23:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:43,427 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 242 transitions. [2022-12-13 11:23:43,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.75) internal successors, (253), 44 states have internal predecessors, (253), 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 11:23:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 242 transitions. [2022-12-13 11:23:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-12-13 11:23:43,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:43,428 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:43,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-12-13 11:23:43,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-12-13 11:23:43,629 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:43,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1489764285, now seen corresponding path program 44 times [2022-12-13 11:23:43,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:43,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701103486] [2022-12-13 11:23:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:43,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 2777 proven. 1517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:45,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:45,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701103486] [2022-12-13 11:23:45,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701103486] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:45,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076649536] [2022-12-13 11:23:45,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:23:45,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:45,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:45,918 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:45,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-12-13 11:23:46,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:23:46,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:46,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-13 11:23:46,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 2886 proven. 1406 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:23:47,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 2886 proven. 1406 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:23:49,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076649536] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:49,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:49,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78, 78] total 119 [2022-12-13 11:23:49,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103797589] [2022-12-13 11:23:49,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:49,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-12-13 11:23:49,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:49,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-12-13 11:23:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3163, Invalid=10879, Unknown=0, NotChecked=0, Total=14042 [2022-12-13 11:23:49,260 INFO L87 Difference]: Start difference. First operand 239 states and 242 transitions. Second operand has 119 states, 119 states have (on average 3.3445378151260505) internal successors, (398), 119 states have internal predecessors, (398), 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 11:23:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:50,681 INFO L93 Difference]: Finished difference Result 550 states and 630 transitions. [2022-12-13 11:23:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-13 11:23:50,681 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.3445378151260505) internal successors, (398), 119 states have internal predecessors, (398), 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 238 [2022-12-13 11:23:50,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:50,682 INFO L225 Difference]: With dead ends: 550 [2022-12-13 11:23:50,682 INFO L226 Difference]: Without dead ends: 393 [2022-12-13 11:23:50,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 362 SyntacticMatches, 74 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9171 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6129, Invalid=18363, Unknown=0, NotChecked=0, Total=24492 [2022-12-13 11:23:50,684 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 598 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:50,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 914 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:23:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-12-13 11:23:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 241. [2022-12-13 11:23:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.0166666666666666) internal successors, (244), 240 states have internal predecessors, (244), 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 11:23:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 244 transitions. [2022-12-13 11:23:50,709 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 244 transitions. Word has length 238 [2022-12-13 11:23:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:50,709 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 244 transitions. [2022-12-13 11:23:50,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.3445378151260505) internal successors, (398), 119 states have internal predecessors, (398), 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 11:23:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 244 transitions. [2022-12-13 11:23:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-12-13 11:23:50,710 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:50,710 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:50,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-12-13 11:23:50,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-12-13 11:23:50,911 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:50,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:50,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1569193944, now seen corresponding path program 45 times [2022-12-13 11:23:50,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:50,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263268126] [2022-12-13 11:23:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:50,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:23:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2777 proven. 1593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:23:53,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263268126] [2022-12-13 11:23:53,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263268126] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:23:53,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46379250] [2022-12-13 11:23:53,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:23:53,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:53,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:23:53,177 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:23:53,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-12-13 11:23:53,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2022-12-13 11:23:53,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:23:53,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-13 11:23:53,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:23:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2888 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:55,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:23:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 2888 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:23:56,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46379250] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:23:56,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:23:56,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 121 [2022-12-13 11:23:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319254535] [2022-12-13 11:23:56,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:23:56,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-12-13 11:23:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:23:56,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-12-13 11:23:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3283, Invalid=11237, Unknown=0, NotChecked=0, Total=14520 [2022-12-13 11:23:56,546 INFO L87 Difference]: Start difference. First operand 241 states and 244 transitions. Second operand has 121 states, 121 states have (on average 3.3057851239669422) internal successors, (400), 121 states have internal predecessors, (400), 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 11:23:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:23:58,330 INFO L93 Difference]: Finished difference Result 558 states and 640 transitions. [2022-12-13 11:23:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-13 11:23:58,330 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 3.3057851239669422) internal successors, (400), 121 states have internal predecessors, (400), 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 240 [2022-12-13 11:23:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:23:58,331 INFO L225 Difference]: With dead ends: 558 [2022-12-13 11:23:58,331 INFO L226 Difference]: Without dead ends: 399 [2022-12-13 11:23:58,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 363 SyntacticMatches, 76 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9492 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6405, Invalid=19035, Unknown=0, NotChecked=0, Total=25440 [2022-12-13 11:23:58,333 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 513 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:23:58,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1015 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 11:23:58,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-12-13 11:23:58,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 243. [2022-12-13 11:23:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.0165289256198347) internal successors, (246), 242 states have internal predecessors, (246), 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 11:23:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 246 transitions. [2022-12-13 11:23:58,378 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 246 transitions. Word has length 240 [2022-12-13 11:23:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:23:58,378 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 246 transitions. [2022-12-13 11:23:58,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 3.3057851239669422) internal successors, (400), 121 states have internal predecessors, (400), 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 11:23:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 246 transitions. [2022-12-13 11:23:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-12-13 11:23:58,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:23:58,379 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:23:58,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-12-13 11:23:58,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:23:58,581 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:23:58,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:23:58,582 INFO L85 PathProgramCache]: Analyzing trace with hash -591684915, now seen corresponding path program 46 times [2022-12-13 11:23:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:23:58,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056614426] [2022-12-13 11:23:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:23:58,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:23:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 1482 proven. 2966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:00,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:24:00,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056614426] [2022-12-13 11:24:00,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056614426] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:24:00,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173164181] [2022-12-13 11:24:00,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:24:00,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:00,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:00,032 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:24:00,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-12-13 11:24:00,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:24:00,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:24:00,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-13 11:24:00,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:24:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 1560 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:00,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:24:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4448 backedges. 1560 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:01,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173164181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:24:01,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:24:01,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2022-12-13 11:24:01,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651228460] [2022-12-13 11:24:01,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:24:01,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 11:24:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:24:01,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 11:24:01,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=912, Invalid=1158, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 11:24:01,368 INFO L87 Difference]: Start difference. First operand 243 states and 246 transitions. Second operand has 46 states, 46 states have (on average 5.760869565217392) internal successors, (265), 46 states have internal predecessors, (265), 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 11:24:02,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:24:02,038 INFO L93 Difference]: Finished difference Result 260 states and 264 transitions. [2022-12-13 11:24:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-12-13 11:24:02,038 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.760869565217392) internal successors, (265), 46 states have internal predecessors, (265), 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 242 [2022-12-13 11:24:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:24:02,038 INFO L225 Difference]: With dead ends: 260 [2022-12-13 11:24:02,039 INFO L226 Difference]: Without dead ends: 258 [2022-12-13 11:24:02,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 443 SyntacticMatches, 76 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3616 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2802, Invalid=4854, Unknown=0, NotChecked=0, Total=7656 [2022-12-13 11:24:02,039 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 134 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:24:02,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 448 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:24:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-12-13 11:24:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 251. [2022-12-13 11:24:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.016) internal successors, (254), 250 states have internal predecessors, (254), 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 11:24:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 254 transitions. [2022-12-13 11:24:02,066 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 254 transitions. Word has length 242 [2022-12-13 11:24:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:24:02,066 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 254 transitions. [2022-12-13 11:24:02,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.760869565217392) internal successors, (265), 46 states have internal predecessors, (265), 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 11:24:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 254 transitions. [2022-12-13 11:24:02,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-12-13 11:24:02,067 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:02,067 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:02,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-12-13 11:24:02,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-12-13 11:24:02,268 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:24:02,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2128949325, now seen corresponding path program 47 times [2022-12-13 11:24:02,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:24:02,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377234622] [2022-12-13 11:24:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:02,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:24:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 3083 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:04,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:24:04,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377234622] [2022-12-13 11:24:04,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377234622] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:24:04,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265191129] [2022-12-13 11:24:04,543 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:24:04,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:04,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:04,544 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:24:04,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-12-13 11:24:04,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2022-12-13 11:24:04,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:24:04,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 83 conjunts are in the unsatisfiable core [2022-12-13 11:24:04,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:24:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 3200 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:06,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:24:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4760 backedges. 3200 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:08,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265191129] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:24:08,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:24:08,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 128 [2022-12-13 11:24:08,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627270985] [2022-12-13 11:24:08,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:24:08,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-12-13 11:24:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:24:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-12-13 11:24:08,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3700, Invalid=12556, Unknown=0, NotChecked=0, Total=16256 [2022-12-13 11:24:08,261 INFO L87 Difference]: Start difference. First operand 251 states and 254 transitions. Second operand has 128 states, 128 states have (on average 3.3359375) internal successors, (427), 128 states have internal predecessors, (427), 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 11:24:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:24:10,437 INFO L93 Difference]: Finished difference Result 745 states and 832 transitions. [2022-12-13 11:24:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-12-13 11:24:10,437 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 3.3359375) internal successors, (427), 128 states have internal predecessors, (427), 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 250 [2022-12-13 11:24:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:24:10,438 INFO L225 Difference]: With dead ends: 745 [2022-12-13 11:24:10,438 INFO L226 Difference]: Without dead ends: 419 [2022-12-13 11:24:10,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 378 SyntacticMatches, 77 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14560 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10546, Invalid=32926, Unknown=0, NotChecked=0, Total=43472 [2022-12-13 11:24:10,440 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 989 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:24:10,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1135 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 11:24:10,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-12-13 11:24:10,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 255. [2022-12-13 11:24:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.015748031496063) internal successors, (258), 254 states have internal predecessors, (258), 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 11:24:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 258 transitions. [2022-12-13 11:24:10,472 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 258 transitions. Word has length 250 [2022-12-13 11:24:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:24:10,472 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 258 transitions. [2022-12-13 11:24:10,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 3.3359375) internal successors, (427), 128 states have internal predecessors, (427), 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 11:24:10,472 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 258 transitions. [2022-12-13 11:24:10,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-12-13 11:24:10,473 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:10,473 INFO L195 NwaCegarLoop]: trace histogram [42, 41, 41, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:10,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-12-13 11:24:10,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-12-13 11:24:10,674 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:24:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:10,675 INFO L85 PathProgramCache]: Analyzing trace with hash 145550141, now seen corresponding path program 48 times [2022-12-13 11:24:10,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:24:10,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96677368] [2022-12-13 11:24:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:10,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:24:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4922 backedges. 1640 proven. 3282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:24:12,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96677368] [2022-12-13 11:24:12,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96677368] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:24:12,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473895233] [2022-12-13 11:24:12,522 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:24:12,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:12,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:12,523 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:24:12,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-13 11:24:12,712 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2022-12-13 11:24:12,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:24:12,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-13 11:24:12,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:24:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4922 backedges. 1722 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:12,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:24:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4922 backedges. 1722 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:13,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473895233] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:24:13,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:24:13,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2022-12-13 11:24:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920236332] [2022-12-13 11:24:13,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:24:13,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 11:24:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:24:13,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 11:24:13,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=999, Invalid=1257, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 11:24:13,848 INFO L87 Difference]: Start difference. First operand 255 states and 258 transitions. Second operand has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 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 11:24:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:24:14,392 INFO L93 Difference]: Finished difference Result 272 states and 276 transitions. [2022-12-13 11:24:14,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-12-13 11:24:14,392 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 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 254 [2022-12-13 11:24:14,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:24:14,394 INFO L225 Difference]: With dead ends: 272 [2022-12-13 11:24:14,394 INFO L226 Difference]: Without dead ends: 270 [2022-12-13 11:24:14,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 465 SyntacticMatches, 80 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3966 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3067, Invalid=5305, Unknown=0, NotChecked=0, Total=8372 [2022-12-13 11:24:14,395 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 266 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:24:14,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 350 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:24:14,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-12-13 11:24:14,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 263. [2022-12-13 11:24:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.015267175572519) internal successors, (266), 262 states have internal predecessors, (266), 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 11:24:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 266 transitions. [2022-12-13 11:24:14,424 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 266 transitions. Word has length 254 [2022-12-13 11:24:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:24:14,424 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 266 transitions. [2022-12-13 11:24:14,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.770833333333333) internal successors, (277), 48 states have internal predecessors, (277), 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 11:24:14,424 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 266 transitions. [2022-12-13 11:24:14,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-12-13 11:24:14,425 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:14,425 INFO L195 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:14,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-12-13 11:24:14,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:14,626 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:24:14,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:14,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1823256611, now seen corresponding path program 49 times [2022-12-13 11:24:14,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:24:14,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291841330] [2022-12-13 11:24:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:14,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:24:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 3405 proven. 1845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:17,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:24:17,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291841330] [2022-12-13 11:24:17,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291841330] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:24:17,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040135344] [2022-12-13 11:24:17,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:24:17,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:17,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:17,270 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:24:17,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-12-13 11:24:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:17,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 86 conjunts are in the unsatisfiable core [2022-12-13 11:24:17,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:24:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 3526 proven. 1722 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:24:19,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:24:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5250 backedges. 3526 proven. 1722 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:24:21,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040135344] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:24:21,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:24:21,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86, 86] total 131 [2022-12-13 11:24:21,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785153051] [2022-12-13 11:24:21,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:24:21,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-12-13 11:24:21,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:24:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-12-13 11:24:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3831, Invalid=13199, Unknown=0, NotChecked=0, Total=17030 [2022-12-13 11:24:21,467 INFO L87 Difference]: Start difference. First operand 263 states and 266 transitions. Second operand has 131 states, 131 states have (on average 3.3435114503816794) internal successors, (438), 131 states have internal predecessors, (438), 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 11:24:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:24:23,228 INFO L93 Difference]: Finished difference Result 606 states and 694 transitions. [2022-12-13 11:24:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-12-13 11:24:23,229 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 3.3435114503816794) internal successors, (438), 131 states have internal predecessors, (438), 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 262 [2022-12-13 11:24:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:24:23,231 INFO L225 Difference]: With dead ends: 606 [2022-12-13 11:24:23,231 INFO L226 Difference]: Without dead ends: 433 [2022-12-13 11:24:23,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 398 SyntacticMatches, 82 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11147 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7445, Invalid=22311, Unknown=0, NotChecked=0, Total=29756 [2022-12-13 11:24:23,233 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 663 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:24:23,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1004 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:24:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-12-13 11:24:23,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 265. [2022-12-13 11:24:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.0151515151515151) internal successors, (268), 264 states have internal predecessors, (268), 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 11:24:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 268 transitions. [2022-12-13 11:24:23,273 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 268 transitions. Word has length 262 [2022-12-13 11:24:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:24:23,274 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 268 transitions. [2022-12-13 11:24:23,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 3.3435114503816794) internal successors, (438), 131 states have internal predecessors, (438), 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 11:24:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 268 transitions. [2022-12-13 11:24:23,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-12-13 11:24:23,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:23,275 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:23,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-12-13 11:24:23,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-12-13 11:24:23,475 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:24:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:23,476 INFO L85 PathProgramCache]: Analyzing trace with hash -354905848, now seen corresponding path program 50 times [2022-12-13 11:24:23,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:24:23,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942001599] [2022-12-13 11:24:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:23,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:24:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 3405 proven. 1929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:26,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:24:26,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942001599] [2022-12-13 11:24:26,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942001599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:24:26,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952123800] [2022-12-13 11:24:26,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:24:26,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:26,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:26,269 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:24:26,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-12-13 11:24:26,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:24:26,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:24:26,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-13 11:24:26,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:24:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 3528 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:28,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:24:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5334 backedges. 3528 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:30,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952123800] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:24:30,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:24:30,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88, 88] total 133 [2022-12-13 11:24:30,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610521938] [2022-12-13 11:24:30,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:24:30,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-12-13 11:24:30,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:24:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-12-13 11:24:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3963, Invalid=13593, Unknown=0, NotChecked=0, Total=17556 [2022-12-13 11:24:30,348 INFO L87 Difference]: Start difference. First operand 265 states and 268 transitions. Second operand has 133 states, 133 states have (on average 3.308270676691729) internal successors, (440), 133 states have internal predecessors, (440), 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 11:24:32,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:24:32,081 INFO L93 Difference]: Finished difference Result 614 states and 704 transitions. [2022-12-13 11:24:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-12-13 11:24:32,081 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 3.308270676691729) internal successors, (440), 133 states have internal predecessors, (440), 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 264 [2022-12-13 11:24:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:24:32,083 INFO L225 Difference]: With dead ends: 614 [2022-12-13 11:24:32,083 INFO L226 Difference]: Without dead ends: 439 [2022-12-13 11:24:32,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 399 SyntacticMatches, 84 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11500 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7749, Invalid=23051, Unknown=0, NotChecked=0, Total=30800 [2022-12-13 11:24:32,085 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 650 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:24:32,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1005 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:24:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-12-13 11:24:32,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 267. [2022-12-13 11:24:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.0150375939849625) internal successors, (270), 266 states have internal predecessors, (270), 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 11:24:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 270 transitions. [2022-12-13 11:24:32,124 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 270 transitions. Word has length 264 [2022-12-13 11:24:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:24:32,124 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 270 transitions. [2022-12-13 11:24:32,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 3.308270676691729) internal successors, (440), 133 states have internal predecessors, (440), 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 11:24:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 270 transitions. [2022-12-13 11:24:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-13 11:24:32,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:32,125 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:32,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-12-13 11:24:32,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:32,325 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:24:32,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:32,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1919955795, now seen corresponding path program 51 times [2022-12-13 11:24:32,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:24:32,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843522340] [2022-12-13 11:24:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:32,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:24:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 1806 proven. 3614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:34,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:24:34,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843522340] [2022-12-13 11:24:34,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843522340] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:24:34,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957052032] [2022-12-13 11:24:34,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:24:34,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:34,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:34,164 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:24:34,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-12-13 11:24:34,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2022-12-13 11:24:34,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:24:34,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 92 conjunts are in the unsatisfiable core [2022-12-13 11:24:34,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:24:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 1892 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:34,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:24:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 1892 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:35,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957052032] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:24:35,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:24:35,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2022-12-13 11:24:35,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49280341] [2022-12-13 11:24:35,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:24:35,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 11:24:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:24:35,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 11:24:35,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1090, Invalid=1360, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 11:24:35,736 INFO L87 Difference]: Start difference. First operand 267 states and 270 transitions. Second operand has 50 states, 50 states have (on average 5.78) internal successors, (289), 50 states have internal predecessors, (289), 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 11:24:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:24:36,326 INFO L93 Difference]: Finished difference Result 284 states and 288 transitions. [2022-12-13 11:24:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-12-13 11:24:36,326 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.78) internal successors, (289), 50 states have internal predecessors, (289), 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 266 [2022-12-13 11:24:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:24:36,327 INFO L225 Difference]: With dead ends: 284 [2022-12-13 11:24:36,327 INFO L226 Difference]: Without dead ends: 282 [2022-12-13 11:24:36,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 487 SyntacticMatches, 84 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4332 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3344, Invalid=5776, Unknown=0, NotChecked=0, Total=9120 [2022-12-13 11:24:36,328 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 144 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:24:36,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 465 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:24:36,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-12-13 11:24:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 275. [2022-12-13 11:24:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.0145985401459854) internal successors, (278), 274 states have internal predecessors, (278), 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 11:24:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 278 transitions. [2022-12-13 11:24:36,359 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 278 transitions. Word has length 266 [2022-12-13 11:24:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:24:36,359 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 278 transitions. [2022-12-13 11:24:36,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.78) internal successors, (289), 50 states have internal predecessors, (289), 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 11:24:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 278 transitions. [2022-12-13 11:24:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-12-13 11:24:36,360 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:36,360 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:36,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-12-13 11:24:36,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-12-13 11:24:36,562 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:24:36,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:36,563 INFO L85 PathProgramCache]: Analyzing trace with hash -217112173, now seen corresponding path program 52 times [2022-12-13 11:24:36,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:24:36,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361113911] [2022-12-13 11:24:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:36,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:24:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5764 backedges. 3743 proven. 2021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:24:39,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361113911] [2022-12-13 11:24:39,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361113911] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:24:39,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519506945] [2022-12-13 11:24:39,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:24:39,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:39,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:39,254 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:24:39,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-12-13 11:24:39,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:24:39,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:24:39,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 91 conjunts are in the unsatisfiable core [2022-12-13 11:24:39,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:24:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5764 backedges. 3872 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:41,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:24:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5764 backedges. 3872 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:43,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519506945] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:24:43,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:24:43,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 140 [2022-12-13 11:24:43,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846329423] [2022-12-13 11:24:43,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:24:43,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-12-13 11:24:43,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:24:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-12-13 11:24:43,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4420, Invalid=15040, Unknown=0, NotChecked=0, Total=19460 [2022-12-13 11:24:43,409 INFO L87 Difference]: Start difference. First operand 275 states and 278 transitions. Second operand has 140 states, 140 states have (on average 3.335714285714286) internal successors, (467), 140 states have internal predecessors, (467), 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 11:24:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:24:46,592 INFO L93 Difference]: Finished difference Result 817 states and 912 transitions. [2022-12-13 11:24:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-12-13 11:24:46,592 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 3.335714285714286) internal successors, (467), 140 states have internal predecessors, (467), 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 274 [2022-12-13 11:24:46,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:24:46,593 INFO L225 Difference]: With dead ends: 817 [2022-12-13 11:24:46,593 INFO L226 Difference]: Without dead ends: 459 [2022-12-13 11:24:46,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 414 SyntacticMatches, 85 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17514 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=12654, Invalid=39558, Unknown=0, NotChecked=0, Total=52212 [2022-12-13 11:24:46,596 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 820 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:24:46,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1328 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:24:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-12-13 11:24:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 279. [2022-12-13 11:24:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.014388489208633) internal successors, (282), 278 states have internal predecessors, (282), 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 11:24:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 282 transitions. [2022-12-13 11:24:46,628 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 282 transitions. Word has length 274 [2022-12-13 11:24:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:24:46,628 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 282 transitions. [2022-12-13 11:24:46,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 3.335714285714286) internal successors, (467), 140 states have internal predecessors, (467), 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 11:24:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 282 transitions. [2022-12-13 11:24:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-12-13 11:24:46,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:46,630 INFO L195 NwaCegarLoop]: trace histogram [46, 45, 45, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:46,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-12-13 11:24:46,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-12-13 11:24:46,830 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:24:46,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:46,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1094074595, now seen corresponding path program 53 times [2022-12-13 11:24:46,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:24:46,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193175658] [2022-12-13 11:24:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:24:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5942 backedges. 1980 proven. 3962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:48,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:24:48,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193175658] [2022-12-13 11:24:48,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193175658] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:24:48,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731172904] [2022-12-13 11:24:48,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:24:48,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:48,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:48,904 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:24:48,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-12-13 11:24:49,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-12-13 11:24:49,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:24:49,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-13 11:24:49,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:24:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5942 backedges. 2070 proven. 3872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:49,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:24:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5942 backedges. 2070 proven. 3872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:50,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731172904] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:24:50,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:24:50,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2022-12-13 11:24:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875321517] [2022-12-13 11:24:50,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:24:50,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-13 11:24:50,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:24:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-13 11:24:50,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 11:24:50,567 INFO L87 Difference]: Start difference. First operand 279 states and 282 transitions. Second operand has 52 states, 52 states have (on average 5.788461538461538) internal successors, (301), 52 states have internal predecessors, (301), 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 11:24:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:24:51,257 INFO L93 Difference]: Finished difference Result 296 states and 300 transitions. [2022-12-13 11:24:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-12-13 11:24:51,257 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.788461538461538) internal successors, (301), 52 states have internal predecessors, (301), 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 278 [2022-12-13 11:24:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:24:51,258 INFO L225 Difference]: With dead ends: 296 [2022-12-13 11:24:51,258 INFO L226 Difference]: Without dead ends: 294 [2022-12-13 11:24:51,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 509 SyntacticMatches, 88 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4714 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3633, Invalid=6267, Unknown=0, NotChecked=0, Total=9900 [2022-12-13 11:24:51,259 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 290 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:24:51,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 434 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:24:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-12-13 11:24:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 287. [2022-12-13 11:24:51,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.013986013986014) internal successors, (290), 286 states have internal predecessors, (290), 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 11:24:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 290 transitions. [2022-12-13 11:24:51,293 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 290 transitions. Word has length 278 [2022-12-13 11:24:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:24:51,293 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 290 transitions. [2022-12-13 11:24:51,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.788461538461538) internal successors, (301), 52 states have internal predecessors, (301), 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 11:24:51,293 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 290 transitions. [2022-12-13 11:24:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-12-13 11:24:51,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:24:51,294 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:24:51,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-12-13 11:24:51,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:51,495 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:24:51,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:24:51,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1780982787, now seen corresponding path program 54 times [2022-12-13 11:24:51,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:24:51,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691032203] [2022-12-13 11:24:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:24:51,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:24:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:24:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 4097 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:54,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:24:54,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691032203] [2022-12-13 11:24:54,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691032203] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:24:54,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223100490] [2022-12-13 11:24:54,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:24:54,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:24:54,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:24:54,793 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:24:54,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-12-13 11:24:55,021 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2022-12-13 11:24:55,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:24:55,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 95 conjunts are in the unsatisfiable core [2022-12-13 11:24:55,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:24:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 4232 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:57,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:24:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 4232 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:24:59,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223100490] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:24:59,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:24:59,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 146 [2022-12-13 11:24:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85403984] [2022-12-13 11:24:59,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:24:59,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2022-12-13 11:24:59,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:24:59,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2022-12-13 11:24:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4804, Invalid=16366, Unknown=0, NotChecked=0, Total=21170 [2022-12-13 11:24:59,034 INFO L87 Difference]: Start difference. First operand 287 states and 290 transitions. Second operand has 146 states, 146 states have (on average 3.335616438356164) internal successors, (487), 146 states have internal predecessors, (487), 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 11:25:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:25:02,039 INFO L93 Difference]: Finished difference Result 853 states and 952 transitions. [2022-12-13 11:25:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-12-13 11:25:02,040 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 3.335616438356164) internal successors, (487), 146 states have internal predecessors, (487), 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 286 [2022-12-13 11:25:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:25:02,041 INFO L225 Difference]: With dead ends: 853 [2022-12-13 11:25:02,041 INFO L226 Difference]: Without dead ends: 479 [2022-12-13 11:25:02,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 432 SyntacticMatches, 89 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19093 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13780, Invalid=43102, Unknown=0, NotChecked=0, Total=56882 [2022-12-13 11:25:02,043 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 993 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:25:02,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1433 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:25:02,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-12-13 11:25:02,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 291. [2022-12-13 11:25:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.013793103448276) internal successors, (294), 290 states have internal predecessors, (294), 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 11:25:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 294 transitions. [2022-12-13 11:25:02,079 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 294 transitions. Word has length 286 [2022-12-13 11:25:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:25:02,079 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 294 transitions. [2022-12-13 11:25:02,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 3.335616438356164) internal successors, (487), 146 states have internal predecessors, (487), 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 11:25:02,079 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 294 transitions. [2022-12-13 11:25:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-12-13 11:25:02,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:25:02,080 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:25:02,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-12-13 11:25:02,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-12-13 11:25:02,280 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:25:02,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:25:02,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1551909517, now seen corresponding path program 55 times [2022-12-13 11:25:02,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:25:02,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473240638] [2022-12-13 11:25:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:25:02,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:25:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:25:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6488 backedges. 2162 proven. 4326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:04,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:25:04,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473240638] [2022-12-13 11:25:04,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473240638] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:25:04,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986992370] [2022-12-13 11:25:04,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:25:04,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:04,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:25:04,385 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:25:04,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-12-13 11:25:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:25:04,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 100 conjunts are in the unsatisfiable core [2022-12-13 11:25:04,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:25:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6488 backedges. 2256 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:04,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:25:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6488 backedges. 2256 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:06,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986992370] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:25:06,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:25:06,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2022-12-13 11:25:06,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247908420] [2022-12-13 11:25:06,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:25:06,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-13 11:25:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:25:06,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-13 11:25:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1284, Invalid=1578, Unknown=0, NotChecked=0, Total=2862 [2022-12-13 11:25:06,081 INFO L87 Difference]: Start difference. First operand 291 states and 294 transitions. Second operand has 54 states, 54 states have (on average 5.796296296296297) internal successors, (313), 54 states have internal predecessors, (313), 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 11:25:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:25:06,834 INFO L93 Difference]: Finished difference Result 308 states and 312 transitions. [2022-12-13 11:25:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-12-13 11:25:06,834 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.796296296296297) internal successors, (313), 54 states have internal predecessors, (313), 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 290 [2022-12-13 11:25:06,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:25:06,835 INFO L225 Difference]: With dead ends: 308 [2022-12-13 11:25:06,835 INFO L226 Difference]: Without dead ends: 306 [2022-12-13 11:25:06,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 531 SyntacticMatches, 92 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5112 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3934, Invalid=6778, Unknown=0, NotChecked=0, Total=10712 [2022-12-13 11:25:06,836 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 158 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:25:06,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 509 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:25:06,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-12-13 11:25:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 299. [2022-12-13 11:25:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.0134228187919463) internal successors, (302), 298 states have internal predecessors, (302), 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 11:25:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 302 transitions. [2022-12-13 11:25:06,874 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 302 transitions. Word has length 290 [2022-12-13 11:25:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:25:06,874 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 302 transitions. [2022-12-13 11:25:06,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.796296296296297) internal successors, (313), 54 states have internal predecessors, (313), 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 11:25:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 302 transitions. [2022-12-13 11:25:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-12-13 11:25:06,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:25:06,875 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 48, 48, 48, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:25:06,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-12-13 11:25:07,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-12-13 11:25:07,076 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:25:07,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:25:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash -727992461, now seen corresponding path program 56 times [2022-12-13 11:25:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:25:07,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377493315] [2022-12-13 11:25:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:25:07,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:25:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:25:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6864 backedges. 4467 proven. 2397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:10,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:25:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377493315] [2022-12-13 11:25:10,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377493315] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:25:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202454330] [2022-12-13 11:25:10,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:25:10,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:10,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:25:10,606 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:25:10,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-12-13 11:25:10,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:25:10,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:25:10,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-13 11:25:10,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:25:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6864 backedges. 4606 proven. 2256 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:25:13,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:25:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6864 backedges. 4606 proven. 2256 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:25:16,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202454330] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:25:16,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:25:16,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98, 98] total 149 [2022-12-13 11:25:16,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322928168] [2022-12-13 11:25:16,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:25:16,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-12-13 11:25:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:25:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-12-13 11:25:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4953, Invalid=17099, Unknown=0, NotChecked=0, Total=22052 [2022-12-13 11:25:16,135 INFO L87 Difference]: Start difference. First operand 299 states and 302 transitions. Second operand has 149 states, 149 states have (on average 3.3422818791946307) internal successors, (498), 149 states have internal predecessors, (498), 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 11:25:18,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:25:18,325 INFO L93 Difference]: Finished difference Result 690 states and 790 transitions. [2022-12-13 11:25:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-12-13 11:25:18,325 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 3.3422818791946307) internal successors, (498), 149 states have internal predecessors, (498), 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 298 [2022-12-13 11:25:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:25:18,326 INFO L225 Difference]: With dead ends: 690 [2022-12-13 11:25:18,327 INFO L226 Difference]: Without dead ends: 493 [2022-12-13 11:25:18,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 452 SyntacticMatches, 94 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14471 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=9659, Invalid=28953, Unknown=0, NotChecked=0, Total=38612 [2022-12-13 11:25:18,329 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 736 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:25:18,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1135 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 11:25:18,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-12-13 11:25:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 301. [2022-12-13 11:25:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.0133333333333334) internal successors, (304), 300 states have internal predecessors, (304), 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 11:25:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 304 transitions. [2022-12-13 11:25:18,403 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 304 transitions. Word has length 298 [2022-12-13 11:25:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:25:18,403 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 304 transitions. [2022-12-13 11:25:18,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 3.3422818791946307) internal successors, (498), 149 states have internal predecessors, (498), 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 11:25:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 304 transitions. [2022-12-13 11:25:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-12-13 11:25:18,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:25:18,405 INFO L195 NwaCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:25:18,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-12-13 11:25:18,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-12-13 11:25:18,606 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:25:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:25:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1199032792, now seen corresponding path program 57 times [2022-12-13 11:25:18,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:25:18,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604852821] [2022-12-13 11:25:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:25:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:25:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:25:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4467 proven. 2493 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:22,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:25:22,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604852821] [2022-12-13 11:25:22,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604852821] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:25:22,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197842592] [2022-12-13 11:25:22,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:25:22,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:22,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:25:22,211 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:25:22,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-12-13 11:25:22,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2022-12-13 11:25:22,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:25:22,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 100 conjunts are in the unsatisfiable core [2022-12-13 11:25:22,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:25:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4608 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:25,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:25:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6960 backedges. 4608 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:27,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197842592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:25:27,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:25:27,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 151 [2022-12-13 11:25:27,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301363344] [2022-12-13 11:25:27,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:25:27,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2022-12-13 11:25:27,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:25:27,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2022-12-13 11:25:27,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5103, Invalid=17547, Unknown=0, NotChecked=0, Total=22650 [2022-12-13 11:25:27,153 INFO L87 Difference]: Start difference. First operand 301 states and 304 transitions. Second operand has 151 states, 151 states have (on average 3.3112582781456954) internal successors, (500), 151 states have internal predecessors, (500), 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 11:25:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:25:29,277 INFO L93 Difference]: Finished difference Result 698 states and 800 transitions. [2022-12-13 11:25:29,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-13 11:25:29,277 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 3.3112582781456954) internal successors, (500), 151 states have internal predecessors, (500), 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 300 [2022-12-13 11:25:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:25:29,278 INFO L225 Difference]: With dead ends: 698 [2022-12-13 11:25:29,278 INFO L226 Difference]: Without dead ends: 499 [2022-12-13 11:25:29,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 453 SyntacticMatches, 96 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14872 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=10005, Invalid=29795, Unknown=0, NotChecked=0, Total=39800 [2022-12-13 11:25:29,280 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 772 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:25:29,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1219 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 11:25:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-12-13 11:25:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 303. [2022-12-13 11:25:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.0132450331125828) internal successors, (306), 302 states have internal predecessors, (306), 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 11:25:29,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 306 transitions. [2022-12-13 11:25:29,319 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 306 transitions. Word has length 300 [2022-12-13 11:25:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:25:29,319 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 306 transitions. [2022-12-13 11:25:29,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 3.3112582781456954) internal successors, (500), 151 states have internal predecessors, (500), 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 11:25:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 306 transitions. [2022-12-13 11:25:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-12-13 11:25:29,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:25:29,320 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:25:29,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-12-13 11:25:29,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-12-13 11:25:29,521 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:25:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:25:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1939396349, now seen corresponding path program 58 times [2022-12-13 11:25:29,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:25:29,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706337266] [2022-12-13 11:25:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:25:29,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:25:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:25:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7058 backedges. 2352 proven. 4706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:31,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:25:31,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706337266] [2022-12-13 11:25:31,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706337266] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:25:31,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515095840] [2022-12-13 11:25:31,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:25:31,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:31,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:25:31,795 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:25:31,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-12-13 11:25:31,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:25:31,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:25:31,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 104 conjunts are in the unsatisfiable core [2022-12-13 11:25:31,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:25:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7058 backedges. 2450 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:32,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:25:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7058 backedges. 2450 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:33,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515095840] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:25:33,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:25:33,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2022-12-13 11:25:33,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101168290] [2022-12-13 11:25:33,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:25:33,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-13 11:25:33,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:25:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-13 11:25:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1387, Invalid=1693, Unknown=0, NotChecked=0, Total=3080 [2022-12-13 11:25:33,582 INFO L87 Difference]: Start difference. First operand 303 states and 306 transitions. Second operand has 56 states, 56 states have (on average 5.803571428571429) internal successors, (325), 56 states have internal predecessors, (325), 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 11:25:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:25:34,382 INFO L93 Difference]: Finished difference Result 320 states and 324 transitions. [2022-12-13 11:25:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-13 11:25:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.803571428571429) internal successors, (325), 56 states have internal predecessors, (325), 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 302 [2022-12-13 11:25:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:25:34,385 INFO L225 Difference]: With dead ends: 320 [2022-12-13 11:25:34,385 INFO L226 Difference]: Without dead ends: 318 [2022-12-13 11:25:34,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 553 SyntacticMatches, 96 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5526 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4247, Invalid=7309, Unknown=0, NotChecked=0, Total=11556 [2022-12-13 11:25:34,386 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 314 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:25:34,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 405 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:25:34,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-12-13 11:25:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 311. [2022-12-13 11:25:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0129032258064516) internal successors, (314), 310 states have internal predecessors, (314), 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 11:25:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 314 transitions. [2022-12-13 11:25:34,461 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 314 transitions. Word has length 302 [2022-12-13 11:25:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:25:34,461 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 314 transitions. [2022-12-13 11:25:34,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.803571428571429) internal successors, (325), 56 states have internal predecessors, (325), 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 11:25:34,461 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 314 transitions. [2022-12-13 11:25:34,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-12-13 11:25:34,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:25:34,463 INFO L195 NwaCegarLoop]: trace histogram [51, 50, 50, 50, 50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:25:34,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-12-13 11:25:34,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:34,664 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:25:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:25:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1043276829, now seen corresponding path program 59 times [2022-12-13 11:25:34,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:25:34,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162912215] [2022-12-13 11:25:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:25:34,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:25:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:25:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 4853 proven. 2597 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:38,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:25:38,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162912215] [2022-12-13 11:25:38,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162912215] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:25:38,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953474708] [2022-12-13 11:25:38,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:25:38,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:38,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:25:38,450 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:25:38,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-12-13 11:25:38,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2022-12-13 11:25:38,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:25:38,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 103 conjunts are in the unsatisfiable core [2022-12-13 11:25:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:25:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 5000 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:41,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:25:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7450 backedges. 5000 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:43,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953474708] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:25:43,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:25:43,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 158 [2022-12-13 11:25:43,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72221533] [2022-12-13 11:25:43,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:25:43,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-12-13 11:25:43,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:25:43,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-12-13 11:25:43,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5620, Invalid=19186, Unknown=0, NotChecked=0, Total=24806 [2022-12-13 11:25:43,845 INFO L87 Difference]: Start difference. First operand 311 states and 314 transitions. Second operand has 158 states, 158 states have (on average 3.3354430379746836) internal successors, (527), 158 states have internal predecessors, (527), 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 11:25:47,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:25:47,930 INFO L93 Difference]: Finished difference Result 925 states and 1032 transitions. [2022-12-13 11:25:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-12-13 11:25:47,930 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 3.3354430379746836) internal successors, (527), 158 states have internal predecessors, (527), 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 310 [2022-12-13 11:25:47,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:25:47,931 INFO L225 Difference]: With dead ends: 925 [2022-12-13 11:25:47,931 INFO L226 Difference]: Without dead ends: 519 [2022-12-13 11:25:47,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 468 SyntacticMatches, 97 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22455 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=16176, Invalid=50646, Unknown=0, NotChecked=0, Total=66822 [2022-12-13 11:25:47,935 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 936 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:25:47,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1378 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:25:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-12-13 11:25:47,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 315. [2022-12-13 11:25:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.0127388535031847) internal successors, (318), 314 states have internal predecessors, (318), 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 11:25:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 318 transitions. [2022-12-13 11:25:47,976 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 318 transitions. Word has length 310 [2022-12-13 11:25:47,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:25:47,977 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 318 transitions. [2022-12-13 11:25:47,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 3.3354430379746836) internal successors, (527), 158 states have internal predecessors, (527), 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 11:25:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 318 transitions. [2022-12-13 11:25:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-12-13 11:25:47,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:25:47,978 INFO L195 NwaCegarLoop]: trace histogram [52, 51, 51, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:25:47,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-12-13 11:25:48,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:48,179 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:25:48,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:25:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1035533421, now seen corresponding path program 60 times [2022-12-13 11:25:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:25:48,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848873807] [2022-12-13 11:25:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:25:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:25:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:25:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7652 backedges. 2550 proven. 5102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:50,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:25:50,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848873807] [2022-12-13 11:25:50,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848873807] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:25:50,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942400495] [2022-12-13 11:25:50,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:25:50,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:50,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:25:50,862 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:25:50,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-12-13 11:25:51,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2022-12-13 11:25:51,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:25:51,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 108 conjunts are in the unsatisfiable core [2022-12-13 11:25:51,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:25:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7652 backedges. 2652 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:51,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:25:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7652 backedges. 2652 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:52,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942400495] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:25:52,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:25:52,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 58 [2022-12-13 11:25:52,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778205485] [2022-12-13 11:25:52,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:25:52,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-12-13 11:25:52,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:25:52,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-12-13 11:25:52,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1494, Invalid=1812, Unknown=0, NotChecked=0, Total=3306 [2022-12-13 11:25:52,783 INFO L87 Difference]: Start difference. First operand 315 states and 318 transitions. Second operand has 58 states, 58 states have (on average 5.810344827586207) internal successors, (337), 58 states have internal predecessors, (337), 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 11:25:53,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:25:53,670 INFO L93 Difference]: Finished difference Result 332 states and 336 transitions. [2022-12-13 11:25:53,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-12-13 11:25:53,670 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.810344827586207) internal successors, (337), 58 states have internal predecessors, (337), 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 314 [2022-12-13 11:25:53,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:25:53,671 INFO L225 Difference]: With dead ends: 332 [2022-12-13 11:25:53,671 INFO L226 Difference]: Without dead ends: 330 [2022-12-13 11:25:53,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 575 SyntacticMatches, 100 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5956 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4572, Invalid=7860, Unknown=0, NotChecked=0, Total=12432 [2022-12-13 11:25:53,672 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 328 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:25:53,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 460 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:25:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-12-13 11:25:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 323. [2022-12-13 11:25:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.0124223602484472) internal successors, (326), 322 states have internal predecessors, (326), 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 11:25:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 326 transitions. [2022-12-13 11:25:53,715 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 326 transitions. Word has length 314 [2022-12-13 11:25:53,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:25:53,715 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 326 transitions. [2022-12-13 11:25:53,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.810344827586207) internal successors, (337), 58 states have internal predecessors, (337), 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 11:25:53,716 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 326 transitions. [2022-12-13 11:25:53,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-12-13 11:25:53,717 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:25:53,717 INFO L195 NwaCegarLoop]: trace histogram [53, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:25:53,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-12-13 11:25:53,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:53,918 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:25:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:25:53,919 INFO L85 PathProgramCache]: Analyzing trace with hash 770478419, now seen corresponding path program 61 times [2022-12-13 11:25:53,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:25:53,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917981660] [2022-12-13 11:25:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:25:53,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:25:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:25:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8060 backedges. 5255 proven. 2805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:25:57,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:25:57,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917981660] [2022-12-13 11:25:57,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917981660] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:25:57,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733534620] [2022-12-13 11:25:57,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:25:57,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:25:57,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:25:57,930 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:25:57,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-12-13 11:25:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:25:58,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 106 conjunts are in the unsatisfiable core [2022-12-13 11:25:58,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:26:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8060 backedges. 5406 proven. 2652 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:26:01,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:26:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8060 backedges. 5406 proven. 2652 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:26:03,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733534620] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:26:03,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:26:03,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106, 106] total 161 [2022-12-13 11:26:03,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763631033] [2022-12-13 11:26:03,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:26:03,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2022-12-13 11:26:03,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:26:03,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2022-12-13 11:26:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5781, Invalid=19979, Unknown=0, NotChecked=0, Total=25760 [2022-12-13 11:26:03,848 INFO L87 Difference]: Start difference. First operand 323 states and 326 transitions. Second operand has 161 states, 161 states have (on average 3.341614906832298) internal successors, (538), 161 states have internal predecessors, (538), 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 11:26:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:26:06,498 INFO L93 Difference]: Finished difference Result 746 states and 854 transitions. [2022-12-13 11:26:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-13 11:26:06,498 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 3.341614906832298) internal successors, (538), 161 states have internal predecessors, (538), 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 322 [2022-12-13 11:26:06,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:26:06,500 INFO L225 Difference]: With dead ends: 746 [2022-12-13 11:26:06,500 INFO L226 Difference]: Without dead ends: 533 [2022-12-13 11:26:06,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 488 SyntacticMatches, 102 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16927 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=11295, Invalid=33861, Unknown=0, NotChecked=0, Total=45156 [2022-12-13 11:26:06,503 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 1024 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:26:06,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1215 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 11:26:06,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-12-13 11:26:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 325. [2022-12-13 11:26:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.0123456790123457) internal successors, (328), 324 states have internal predecessors, (328), 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 11:26:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 328 transitions. [2022-12-13 11:26:06,552 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 328 transitions. Word has length 322 [2022-12-13 11:26:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:26:06,552 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 328 transitions. [2022-12-13 11:26:06,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 3.341614906832298) internal successors, (538), 161 states have internal predecessors, (538), 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 11:26:06,553 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 328 transitions. [2022-12-13 11:26:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-12-13 11:26:06,554 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:26:06,554 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:26:06,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-12-13 11:26:06,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:26:06,755 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:26:06,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:26:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1497433272, now seen corresponding path program 62 times [2022-12-13 11:26:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:26:06,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825460141] [2022-12-13 11:26:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:26:06,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:26:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:26:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8164 backedges. 5255 proven. 2909 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:10,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:26:10,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825460141] [2022-12-13 11:26:10,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825460141] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:26:10,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686202847] [2022-12-13 11:26:10,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:26:10,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:26:10,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:26:10,997 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:26:10,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-12-13 11:26:11,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:26:11,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:26:11,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 108 conjunts are in the unsatisfiable core [2022-12-13 11:26:11,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:26:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8164 backedges. 5408 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:14,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:26:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8164 backedges. 5408 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:16,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686202847] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:26:16,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:26:16,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 163 [2022-12-13 11:26:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686757590] [2022-12-13 11:26:16,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:26:16,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-12-13 11:26:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:26:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-12-13 11:26:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5943, Invalid=20463, Unknown=0, NotChecked=0, Total=26406 [2022-12-13 11:26:16,292 INFO L87 Difference]: Start difference. First operand 325 states and 328 transitions. Second operand has 163 states, 163 states have (on average 3.312883435582822) internal successors, (540), 163 states have internal predecessors, (540), 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 11:26:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:26:19,323 INFO L93 Difference]: Finished difference Result 754 states and 864 transitions. [2022-12-13 11:26:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-12-13 11:26:19,323 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 3.312883435582822) internal successors, (540), 163 states have internal predecessors, (540), 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 324 [2022-12-13 11:26:19,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:26:19,324 INFO L225 Difference]: With dead ends: 754 [2022-12-13 11:26:19,324 INFO L226 Difference]: Without dead ends: 539 [2022-12-13 11:26:19,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 489 SyntacticMatches, 104 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17360 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=11669, Invalid=34771, Unknown=0, NotChecked=0, Total=46440 [2022-12-13 11:26:19,327 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 879 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:26:19,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 1301 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 11:26:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-12-13 11:26:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 327. [2022-12-13 11:26:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.0122699386503067) internal successors, (330), 326 states have internal predecessors, (330), 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 11:26:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 330 transitions. [2022-12-13 11:26:19,381 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 330 transitions. Word has length 324 [2022-12-13 11:26:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:26:19,381 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 330 transitions. [2022-12-13 11:26:19,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 3.312883435582822) internal successors, (540), 163 states have internal predecessors, (540), 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 11:26:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 330 transitions. [2022-12-13 11:26:19,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-12-13 11:26:19,382 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:26:19,382 INFO L195 NwaCegarLoop]: trace histogram [54, 53, 53, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:26:19,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-12-13 11:26:19,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:26:19,583 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:26:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:26:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash 21377757, now seen corresponding path program 63 times [2022-12-13 11:26:19,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:26:19,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156713989] [2022-12-13 11:26:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:26:19,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:26:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:26:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8270 backedges. 2756 proven. 5514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:26:22,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156713989] [2022-12-13 11:26:22,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156713989] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:26:22,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521529687] [2022-12-13 11:26:22,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:26:22,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:26:22,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:26:22,513 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:26:22,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-12-13 11:26:22,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-12-13 11:26:22,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:26:22,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 112 conjunts are in the unsatisfiable core [2022-12-13 11:26:22,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:26:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8270 backedges. 2862 proven. 5408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:23,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:26:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8270 backedges. 2862 proven. 5408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:24,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521529687] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:26:24,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:26:24,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 60 [2022-12-13 11:26:24,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105218614] [2022-12-13 11:26:24,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:26:24,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-13 11:26:24,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:26:24,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-13 11:26:24,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1605, Invalid=1935, Unknown=0, NotChecked=0, Total=3540 [2022-12-13 11:26:24,764 INFO L87 Difference]: Start difference. First operand 327 states and 330 transitions. Second operand has 60 states, 60 states have (on average 5.816666666666666) internal successors, (349), 60 states have internal predecessors, (349), 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 11:26:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:26:25,874 INFO L93 Difference]: Finished difference Result 344 states and 348 transitions. [2022-12-13 11:26:25,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-12-13 11:26:25,874 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 5.816666666666666) internal successors, (349), 60 states have internal predecessors, (349), 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 326 [2022-12-13 11:26:25,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:26:25,875 INFO L225 Difference]: With dead ends: 344 [2022-12-13 11:26:25,875 INFO L226 Difference]: Without dead ends: 342 [2022-12-13 11:26:25,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 597 SyntacticMatches, 104 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6402 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4909, Invalid=8431, Unknown=0, NotChecked=0, Total=13340 [2022-12-13 11:26:25,876 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 176 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:26:25,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 547 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:26:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-12-13 11:26:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 335. [2022-12-13 11:26:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.0119760479041917) internal successors, (338), 334 states have internal predecessors, (338), 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 11:26:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 338 transitions. [2022-12-13 11:26:25,922 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 338 transitions. Word has length 326 [2022-12-13 11:26:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:26:25,923 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 338 transitions. [2022-12-13 11:26:25,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 5.816666666666666) internal successors, (349), 60 states have internal predecessors, (349), 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 11:26:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 338 transitions. [2022-12-13 11:26:25,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-12-13 11:26:25,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:26:25,924 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 54, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:26:25,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-12-13 11:26:26,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:26:26,126 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:26:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:26:26,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1641306051, now seen corresponding path program 64 times [2022-12-13 11:26:26,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:26:26,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290122144] [2022-12-13 11:26:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:26:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:26:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:26:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8694 backedges. 5673 proven. 3021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:30,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:26:30,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290122144] [2022-12-13 11:26:30,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290122144] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:26:30,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069063059] [2022-12-13 11:26:30,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:26:30,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:26:30,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:26:30,648 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:26:30,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-12-13 11:26:30,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:26:30,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:26:30,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-13 11:26:30,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:26:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8694 backedges. 5832 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:34,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:26:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8694 backedges. 5832 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:37,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069063059] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:26:37,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:26:37,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111, 111] total 170 [2022-12-13 11:26:37,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285573742] [2022-12-13 11:26:37,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:26:37,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2022-12-13 11:26:37,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:26:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2022-12-13 11:26:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6500, Invalid=22230, Unknown=0, NotChecked=0, Total=28730 [2022-12-13 11:26:37,644 INFO L87 Difference]: Start difference. First operand 335 states and 338 transitions. Second operand has 170 states, 170 states have (on average 3.335294117647059) internal successors, (567), 170 states have internal predecessors, (567), 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 11:26:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:26:41,970 INFO L93 Difference]: Finished difference Result 997 states and 1112 transitions. [2022-12-13 11:26:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-12-13 11:26:41,970 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 3.335294117647059) internal successors, (567), 170 states have internal predecessors, (567), 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 334 [2022-12-13 11:26:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:26:41,973 INFO L225 Difference]: With dead ends: 997 [2022-12-13 11:26:41,973 INFO L226 Difference]: Without dead ends: 559 [2022-12-13 11:26:41,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 504 SyntacticMatches, 105 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26089 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=18764, Invalid=58798, Unknown=0, NotChecked=0, Total=77562 [2022-12-13 11:26:41,977 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 976 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:26:41,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1879 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 11:26:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-12-13 11:26:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 339. [2022-12-13 11:26:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.0118343195266273) internal successors, (342), 338 states have internal predecessors, (342), 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 11:26:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 342 transitions. [2022-12-13 11:26:42,028 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 342 transitions. Word has length 334 [2022-12-13 11:26:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:26:42,028 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 342 transitions. [2022-12-13 11:26:42,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 3.335294117647059) internal successors, (567), 170 states have internal predecessors, (567), 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 11:26:42,028 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 342 transitions. [2022-12-13 11:26:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-12-13 11:26:42,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:26:42,029 INFO L195 NwaCegarLoop]: trace histogram [56, 55, 55, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:26:42,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-12-13 11:26:42,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-12-13 11:26:42,230 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:26:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:26:42,231 INFO L85 PathProgramCache]: Analyzing trace with hash -244975027, now seen corresponding path program 65 times [2022-12-13 11:26:42,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:26:42,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15771861] [2022-12-13 11:26:42,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:26:42,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:26:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:26:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8912 backedges. 2970 proven. 5942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:45,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:26:45,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15771861] [2022-12-13 11:26:45,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15771861] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:26:45,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900867701] [2022-12-13 11:26:45,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:26:45,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:26:45,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:26:45,391 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:26:45,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-12-13 11:26:45,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2022-12-13 11:26:45,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:26:45,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 116 conjunts are in the unsatisfiable core [2022-12-13 11:26:45,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:26:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8912 backedges. 3080 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:45,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:26:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8912 backedges. 3080 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:47,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900867701] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:26:47,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:26:47,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 62 [2022-12-13 11:26:47,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621872644] [2022-12-13 11:26:47,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:26:47,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-12-13 11:26:47,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:26:47,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-12-13 11:26:47,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1720, Invalid=2062, Unknown=0, NotChecked=0, Total=3782 [2022-12-13 11:26:47,812 INFO L87 Difference]: Start difference. First operand 339 states and 342 transitions. Second operand has 62 states, 62 states have (on average 5.82258064516129) internal successors, (361), 62 states have internal predecessors, (361), 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 11:26:48,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:26:48,889 INFO L93 Difference]: Finished difference Result 356 states and 360 transitions. [2022-12-13 11:26:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-12-13 11:26:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.82258064516129) internal successors, (361), 62 states have internal predecessors, (361), 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 338 [2022-12-13 11:26:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:26:48,890 INFO L225 Difference]: With dead ends: 356 [2022-12-13 11:26:48,890 INFO L226 Difference]: Without dead ends: 354 [2022-12-13 11:26:48,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 619 SyntacticMatches, 108 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6864 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5258, Invalid=9022, Unknown=0, NotChecked=0, Total=14280 [2022-12-13 11:26:48,891 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 354 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:26:48,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 465 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:26:48,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-12-13 11:26:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 347. [2022-12-13 11:26:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.0115606936416186) internal successors, (350), 346 states have internal predecessors, (350), 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 11:26:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 350 transitions. [2022-12-13 11:26:48,940 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 350 transitions. Word has length 338 [2022-12-13 11:26:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:26:48,940 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 350 transitions. [2022-12-13 11:26:48,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.82258064516129) internal successors, (361), 62 states have internal predecessors, (361), 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 11:26:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 350 transitions. [2022-12-13 11:26:48,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-12-13 11:26:48,942 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:26:48,942 INFO L195 NwaCegarLoop]: trace histogram [57, 56, 56, 56, 56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:26:48,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-12-13 11:26:49,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-12-13 11:26:49,143 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:26:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:26:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash -751980749, now seen corresponding path program 66 times [2022-12-13 11:26:49,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:26:49,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903560899] [2022-12-13 11:26:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:26:49,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:26:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:26:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9352 backedges. 6107 proven. 3245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:54,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:26:54,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903560899] [2022-12-13 11:26:54,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903560899] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:26:54,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703376189] [2022-12-13 11:26:54,191 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:26:54,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:26:54,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:26:54,192 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:26:54,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-12-13 11:26:54,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2022-12-13 11:26:54,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:26:54,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 115 conjunts are in the unsatisfiable core [2022-12-13 11:26:54,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:26:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9352 backedges. 6272 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:26:58,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:27:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9352 backedges. 6272 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:01,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703376189] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:27:01,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:27:01,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115, 115] total 176 [2022-12-13 11:27:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863935054] [2022-12-13 11:27:01,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:27:01,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2022-12-13 11:27:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2022-12-13 11:27:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6964, Invalid=23836, Unknown=0, NotChecked=0, Total=30800 [2022-12-13 11:27:01,582 INFO L87 Difference]: Start difference. First operand 347 states and 350 transitions. Second operand has 176 states, 176 states have (on average 3.335227272727273) internal successors, (587), 176 states have internal predecessors, (587), 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 11:27:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:27:06,407 INFO L93 Difference]: Finished difference Result 1033 states and 1152 transitions. [2022-12-13 11:27:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-12-13 11:27:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 3.335227272727273) internal successors, (587), 176 states have internal predecessors, (587), 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 346 [2022-12-13 11:27:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:27:06,410 INFO L225 Difference]: With dead ends: 1033 [2022-12-13 11:27:06,410 INFO L226 Difference]: Without dead ends: 579 [2022-12-13 11:27:06,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 522 SyntacticMatches, 109 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28008 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=20130, Invalid=63102, Unknown=0, NotChecked=0, Total=83232 [2022-12-13 11:27:06,414 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1020 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:27:06,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1562 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 11:27:06,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-12-13 11:27:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 351. [2022-12-13 11:27:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.0114285714285713) internal successors, (354), 350 states have internal predecessors, (354), 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 11:27:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 354 transitions. [2022-12-13 11:27:06,466 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 354 transitions. Word has length 346 [2022-12-13 11:27:06,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:27:06,466 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 354 transitions. [2022-12-13 11:27:06,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 3.335227272727273) internal successors, (587), 176 states have internal predecessors, (587), 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 11:27:06,466 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 354 transitions. [2022-12-13 11:27:06,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-12-13 11:27:06,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:27:06,467 INFO L195 NwaCegarLoop]: trace histogram [58, 57, 57, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:27:06,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-12-13 11:27:06,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:06,668 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:27:06,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash 234738365, now seen corresponding path program 67 times [2022-12-13 11:27:06,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:06,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637485747] [2022-12-13 11:27:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9578 backedges. 3192 proven. 6386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:09,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637485747] [2022-12-13 11:27:09,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637485747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:27:09,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684203363] [2022-12-13 11:27:09,977 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:27:09,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:09,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:27:09,978 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:27:09,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-12-13 11:27:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:10,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 120 conjunts are in the unsatisfiable core [2022-12-13 11:27:10,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:27:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9578 backedges. 3306 proven. 6272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:10,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:27:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9578 backedges. 3306 proven. 6272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:12,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684203363] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:27:12,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:27:12,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 64 [2022-12-13 11:27:12,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805606532] [2022-12-13 11:27:12,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:27:12,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-13 11:27:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-13 11:27:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1839, Invalid=2193, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 11:27:12,018 INFO L87 Difference]: Start difference. First operand 351 states and 354 transitions. Second operand has 64 states, 64 states have (on average 5.828125) internal successors, (373), 64 states have internal predecessors, (373), 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 11:27:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:27:13,109 INFO L93 Difference]: Finished difference Result 368 states and 372 transitions. [2022-12-13 11:27:13,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-12-13 11:27:13,109 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.828125) internal successors, (373), 64 states have internal predecessors, (373), 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 350 [2022-12-13 11:27:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:27:13,111 INFO L225 Difference]: With dead ends: 368 [2022-12-13 11:27:13,111 INFO L226 Difference]: Without dead ends: 366 [2022-12-13 11:27:13,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 641 SyntacticMatches, 112 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7342 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5619, Invalid=9633, Unknown=0, NotChecked=0, Total=15252 [2022-12-13 11:27:13,112 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 186 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:27:13,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 546 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:27:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-12-13 11:27:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 359. [2022-12-13 11:27:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.011173184357542) internal successors, (362), 358 states have internal predecessors, (362), 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 11:27:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 362 transitions. [2022-12-13 11:27:13,171 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 362 transitions. Word has length 350 [2022-12-13 11:27:13,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:27:13,171 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 362 transitions. [2022-12-13 11:27:13,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.828125) internal successors, (373), 64 states have internal predecessors, (373), 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 11:27:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 362 transitions. [2022-12-13 11:27:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-12-13 11:27:13,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:27:13,172 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 58, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:27:13,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-12-13 11:27:13,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:13,373 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:27:13,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash 73275299, now seen corresponding path program 68 times [2022-12-13 11:27:13,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:13,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723421767] [2022-12-13 11:27:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10034 backedges. 6557 proven. 3477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:18,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:18,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723421767] [2022-12-13 11:27:18,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723421767] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:27:18,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278041594] [2022-12-13 11:27:18,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:27:18,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:18,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:27:18,591 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:27:18,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-12-13 11:27:18,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:27:18,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:27:18,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 118 conjunts are in the unsatisfiable core [2022-12-13 11:27:18,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:27:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10034 backedges. 6726 proven. 3306 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:27:22,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:27:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10034 backedges. 6726 proven. 3306 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:27:25,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278041594] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:27:25,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:27:25,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 118, 118] total 179 [2022-12-13 11:27:25,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049736665] [2022-12-13 11:27:25,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:27:25,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2022-12-13 11:27:25,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2022-12-13 11:27:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7143, Invalid=24719, Unknown=0, NotChecked=0, Total=31862 [2022-12-13 11:27:25,231 INFO L87 Difference]: Start difference. First operand 359 states and 362 transitions. Second operand has 179 states, 179 states have (on average 3.340782122905028) internal successors, (598), 179 states have internal predecessors, (598), 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 11:27:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:27:28,668 INFO L93 Difference]: Finished difference Result 830 states and 950 transitions. [2022-12-13 11:27:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-12-13 11:27:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 3.340782122905028) internal successors, (598), 179 states have internal predecessors, (598), 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 358 [2022-12-13 11:27:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:27:28,670 INFO L225 Difference]: With dead ends: 830 [2022-12-13 11:27:28,670 INFO L226 Difference]: Without dead ends: 593 [2022-12-13 11:27:28,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 542 SyntacticMatches, 114 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20971 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=13989, Invalid=41943, Unknown=0, NotChecked=0, Total=55932 [2022-12-13 11:27:28,672 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1162 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:27:28,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 1630 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:27:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-12-13 11:27:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 361. [2022-12-13 11:27:28,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.011111111111111) internal successors, (364), 360 states have internal predecessors, (364), 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 11:27:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 364 transitions. [2022-12-13 11:27:28,725 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 364 transitions. Word has length 358 [2022-12-13 11:27:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:27:28,726 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 364 transitions. [2022-12-13 11:27:28,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 3.340782122905028) internal successors, (598), 179 states have internal predecessors, (598), 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 11:27:28,726 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 364 transitions. [2022-12-13 11:27:28,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-12-13 11:27:28,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:27:28,727 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:27:28,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-12-13 11:27:28,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:28,928 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:27:28,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:28,929 INFO L85 PathProgramCache]: Analyzing trace with hash 988511368, now seen corresponding path program 69 times [2022-12-13 11:27:28,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:28,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017612095] [2022-12-13 11:27:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:28,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10150 backedges. 6557 proven. 3593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:34,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:34,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017612095] [2022-12-13 11:27:34,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017612095] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:27:34,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965262157] [2022-12-13 11:27:34,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:27:34,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:27:34,203 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:27:34,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-12-13 11:27:34,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2022-12-13 11:27:34,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:27:34,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 120 conjunts are in the unsatisfiable core [2022-12-13 11:27:34,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:27:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10150 backedges. 6728 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:38,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:27:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10150 backedges. 6728 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:41,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965262157] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:27:41,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:27:41,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120, 120] total 181 [2022-12-13 11:27:41,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238476307] [2022-12-13 11:27:41,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:27:41,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 181 states [2022-12-13 11:27:41,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:41,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2022-12-13 11:27:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7323, Invalid=25257, Unknown=0, NotChecked=0, Total=32580 [2022-12-13 11:27:41,389 INFO L87 Difference]: Start difference. First operand 361 states and 364 transitions. Second operand has 181 states, 181 states have (on average 3.314917127071823) internal successors, (600), 181 states have internal predecessors, (600), 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 11:27:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:27:45,041 INFO L93 Difference]: Finished difference Result 838 states and 960 transitions. [2022-12-13 11:27:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-12-13 11:27:45,042 INFO L78 Accepts]: Start accepts. Automaton has has 181 states, 181 states have (on average 3.314917127071823) internal successors, (600), 181 states have internal predecessors, (600), 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 360 [2022-12-13 11:27:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:27:45,043 INFO L225 Difference]: With dead ends: 838 [2022-12-13 11:27:45,043 INFO L226 Difference]: Without dead ends: 599 [2022-12-13 11:27:45,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 543 SyntacticMatches, 116 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21452 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=14405, Invalid=42955, Unknown=0, NotChecked=0, Total=57360 [2022-12-13 11:27:45,045 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1129 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:27:45,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 1592 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:27:45,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-12-13 11:27:45,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 363. [2022-12-13 11:27:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.011049723756906) internal successors, (366), 362 states have internal predecessors, (366), 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 11:27:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 366 transitions. [2022-12-13 11:27:45,100 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 366 transitions. Word has length 360 [2022-12-13 11:27:45,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:27:45,100 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 366 transitions. [2022-12-13 11:27:45,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 181 states, 181 states have (on average 3.314917127071823) internal successors, (600), 181 states have internal predecessors, (600), 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 11:27:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 366 transitions. [2022-12-13 11:27:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-12-13 11:27:45,102 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:27:45,102 INFO L195 NwaCegarLoop]: trace histogram [60, 59, 59, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:27:45,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-12-13 11:27:45,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:45,303 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:27:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:45,304 INFO L85 PathProgramCache]: Analyzing trace with hash 62077997, now seen corresponding path program 70 times [2022-12-13 11:27:45,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:45,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420387024] [2022-12-13 11:27:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10268 backedges. 3422 proven. 6846 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:48,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420387024] [2022-12-13 11:27:48,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420387024] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:27:48,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985977741] [2022-12-13 11:27:48,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:27:48,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:48,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:27:48,940 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:27:48,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-12-13 11:27:49,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:27:49,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:27:49,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 124 conjunts are in the unsatisfiable core [2022-12-13 11:27:49,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:27:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10268 backedges. 3540 proven. 6728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:49,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:27:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10268 backedges. 3540 proven. 6728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:51,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985977741] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:27:51,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:27:51,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 66 [2022-12-13 11:27:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772939775] [2022-12-13 11:27:51,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:27:51,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-12-13 11:27:51,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:27:51,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-12-13 11:27:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1962, Invalid=2328, Unknown=0, NotChecked=0, Total=4290 [2022-12-13 11:27:51,252 INFO L87 Difference]: Start difference. First operand 363 states and 366 transitions. Second operand has 66 states, 66 states have (on average 5.833333333333333) internal successors, (385), 66 states have internal predecessors, (385), 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 11:27:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:27:52,263 INFO L93 Difference]: Finished difference Result 380 states and 384 transitions. [2022-12-13 11:27:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-12-13 11:27:52,263 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.833333333333333) internal successors, (385), 66 states have internal predecessors, (385), 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 362 [2022-12-13 11:27:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:27:52,264 INFO L225 Difference]: With dead ends: 380 [2022-12-13 11:27:52,264 INFO L226 Difference]: Without dead ends: 378 [2022-12-13 11:27:52,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 663 SyntacticMatches, 116 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7836 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5992, Invalid=10264, Unknown=0, NotChecked=0, Total=16256 [2022-12-13 11:27:52,265 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 378 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:27:52,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 552 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:27:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-12-13 11:27:52,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 371. [2022-12-13 11:27:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.0108108108108107) internal successors, (374), 370 states have internal predecessors, (374), 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 11:27:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 374 transitions. [2022-12-13 11:27:52,327 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 374 transitions. Word has length 362 [2022-12-13 11:27:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:27:52,327 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 374 transitions. [2022-12-13 11:27:52,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.833333333333333) internal successors, (385), 66 states have internal predecessors, (385), 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 11:27:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 374 transitions. [2022-12-13 11:27:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-12-13 11:27:52,328 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:27:52,328 INFO L195 NwaCegarLoop]: trace histogram [61, 60, 60, 60, 60, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:27:52,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-12-13 11:27:52,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:52,529 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:27:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:27:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1686835475, now seen corresponding path program 71 times [2022-12-13 11:27:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:27:52,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553718104] [2022-12-13 11:27:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:27:52,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:27:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:27:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10740 backedges. 7023 proven. 3717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:27:57,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:27:57,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553718104] [2022-12-13 11:27:57,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553718104] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:27:57,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531333508] [2022-12-13 11:27:57,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:27:57,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:27:57,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:27:57,808 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:27:57,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-12-13 11:27:58,124 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2022-12-13 11:27:58,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:27:58,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 123 conjunts are in the unsatisfiable core [2022-12-13 11:27:58,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10740 backedges. 7200 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:02,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:28:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10740 backedges. 7200 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:05,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531333508] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:28:05,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:28:05,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123, 123] total 188 [2022-12-13 11:28:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64302093] [2022-12-13 11:28:05,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:28:05,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2022-12-13 11:28:05,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2022-12-13 11:28:05,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7940, Invalid=27216, Unknown=0, NotChecked=0, Total=35156 [2022-12-13 11:28:05,346 INFO L87 Difference]: Start difference. First operand 371 states and 374 transitions. Second operand has 188 states, 188 states have (on average 3.3351063829787235) internal successors, (627), 188 states have internal predecessors, (627), 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 11:28:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:28:11,148 INFO L93 Difference]: Finished difference Result 1105 states and 1232 transitions. [2022-12-13 11:28:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-12-13 11:28:11,148 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 188 states have (on average 3.3351063829787235) internal successors, (627), 188 states have internal predecessors, (627), 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 370 [2022-12-13 11:28:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:28:11,151 INFO L225 Difference]: With dead ends: 1105 [2022-12-13 11:28:11,151 INFO L226 Difference]: Without dead ends: 619 [2022-12-13 11:28:11,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 558 SyntacticMatches, 117 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32050 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=23006, Invalid=72166, Unknown=0, NotChecked=0, Total=95172 [2022-12-13 11:28:11,156 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1297 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:28:11,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 2114 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 11:28:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-12-13 11:28:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 375. [2022-12-13 11:28:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.0106951871657754) internal successors, (378), 374 states have internal predecessors, (378), 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 11:28:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 378 transitions. [2022-12-13 11:28:11,233 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 378 transitions. Word has length 370 [2022-12-13 11:28:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:28:11,233 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 378 transitions. [2022-12-13 11:28:11,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 188 states have (on average 3.3351063829787235) internal successors, (627), 188 states have internal predecessors, (627), 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 11:28:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 378 transitions. [2022-12-13 11:28:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-12-13 11:28:11,234 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:28:11,235 INFO L195 NwaCegarLoop]: trace histogram [62, 61, 61, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:11,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-12-13 11:28:11,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-12-13 11:28:11,436 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:28:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 199997085, now seen corresponding path program 72 times [2022-12-13 11:28:11,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:11,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177987851] [2022-12-13 11:28:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:11,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10982 backedges. 3660 proven. 7322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:15,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:15,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177987851] [2022-12-13 11:28:15,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177987851] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:28:15,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298383295] [2022-12-13 11:28:15,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:28:15,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:15,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:15,066 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:28:15,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-12-13 11:28:15,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2022-12-13 11:28:15,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:28:15,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1379 conjuncts, 128 conjunts are in the unsatisfiable core [2022-12-13 11:28:15,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10982 backedges. 3782 proven. 7200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:15,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:28:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10982 backedges. 3782 proven. 7200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:17,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298383295] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:28:17,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:28:17,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 68 [2022-12-13 11:28:17,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828260793] [2022-12-13 11:28:17,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:28:17,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-13 11:28:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-13 11:28:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2089, Invalid=2467, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 11:28:17,671 INFO L87 Difference]: Start difference. First operand 375 states and 378 transitions. Second operand has 68 states, 68 states have (on average 5.838235294117647) internal successors, (397), 68 states have internal predecessors, (397), 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 11:28:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:28:18,863 INFO L93 Difference]: Finished difference Result 392 states and 396 transitions. [2022-12-13 11:28:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-12-13 11:28:18,864 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 5.838235294117647) internal successors, (397), 68 states have internal predecessors, (397), 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 374 [2022-12-13 11:28:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:28:18,865 INFO L225 Difference]: With dead ends: 392 [2022-12-13 11:28:18,865 INFO L226 Difference]: Without dead ends: 390 [2022-12-13 11:28:18,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 685 SyntacticMatches, 120 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8346 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6377, Invalid=10915, Unknown=0, NotChecked=0, Total=17292 [2022-12-13 11:28:18,866 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 388 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:28:18,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 503 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:28:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-12-13 11:28:18,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 383. [2022-12-13 11:28:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.0104712041884816) internal successors, (386), 382 states have internal predecessors, (386), 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 11:28:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 386 transitions. [2022-12-13 11:28:18,925 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 386 transitions. Word has length 374 [2022-12-13 11:28:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:28:18,926 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 386 transitions. [2022-12-13 11:28:18,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 5.838235294117647) internal successors, (397), 68 states have internal predecessors, (397), 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 11:28:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 386 transitions. [2022-12-13 11:28:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-12-13 11:28:18,927 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:28:18,927 INFO L195 NwaCegarLoop]: trace histogram [63, 62, 62, 62, 62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:18,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-12-13 11:28:19,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-12-13 11:28:19,129 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:28:19,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 798628739, now seen corresponding path program 73 times [2022-12-13 11:28:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:19,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705143452] [2022-12-13 11:28:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:19,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 11470 backedges. 7505 proven. 3965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:24,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:24,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705143452] [2022-12-13 11:28:24,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705143452] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:28:24,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186019866] [2022-12-13 11:28:24,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:28:24,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:24,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:24,755 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:28:24,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-12-13 11:28:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:24,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 126 conjunts are in the unsatisfiable core [2022-12-13 11:28:24,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11470 backedges. 7686 proven. 3782 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:28:29,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:28:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 11470 backedges. 7686 proven. 3782 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:28:31,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186019866] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:28:31,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:28:31,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 126, 126] total 191 [2022-12-13 11:28:31,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413989891] [2022-12-13 11:28:31,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:28:31,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2022-12-13 11:28:31,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2022-12-13 11:28:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8131, Invalid=28159, Unknown=0, NotChecked=0, Total=36290 [2022-12-13 11:28:31,795 INFO L87 Difference]: Start difference. First operand 383 states and 386 transitions. Second operand has 191 states, 191 states have (on average 3.3403141361256545) internal successors, (638), 191 states have internal predecessors, (638), 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 11:28:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:28:35,764 INFO L93 Difference]: Finished difference Result 886 states and 1014 transitions. [2022-12-13 11:28:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-12-13 11:28:35,764 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 3.3403141361256545) internal successors, (638), 191 states have internal predecessors, (638), 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 382 [2022-12-13 11:28:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:28:35,767 INFO L225 Difference]: With dead ends: 886 [2022-12-13 11:28:35,767 INFO L226 Difference]: Without dead ends: 633 [2022-12-13 11:28:35,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 578 SyntacticMatches, 122 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23907 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=15945, Invalid=47811, Unknown=0, NotChecked=0, Total=63756 [2022-12-13 11:28:35,771 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1267 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:28:35,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1477 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 11:28:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-12-13 11:28:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 385. [2022-12-13 11:28:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.0104166666666667) internal successors, (388), 384 states have internal predecessors, (388), 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 11:28:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 388 transitions. [2022-12-13 11:28:35,849 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 388 transitions. Word has length 382 [2022-12-13 11:28:35,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:28:35,849 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 388 transitions. [2022-12-13 11:28:35,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 3.3403141361256545) internal successors, (638), 191 states have internal predecessors, (638), 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 11:28:35,849 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 388 transitions. [2022-12-13 11:28:35,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-12-13 11:28:35,850 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:28:35,850 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:35,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-12-13 11:28:36,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:36,051 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:28:36,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:36,052 INFO L85 PathProgramCache]: Analyzing trace with hash -328179352, now seen corresponding path program 74 times [2022-12-13 11:28:36,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:36,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707009485] [2022-12-13 11:28:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:36,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 7505 proven. 4089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:41,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707009485] [2022-12-13 11:28:41,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707009485] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:28:41,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428606601] [2022-12-13 11:28:41,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:28:41,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:41,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:41,717 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:28:41,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-12-13 11:28:41,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:28:41,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:28:41,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 128 conjunts are in the unsatisfiable core [2022-12-13 11:28:41,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 7688 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:46,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:28:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 7688 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:49,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428606601] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:28:49,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:28:49,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 193 [2022-12-13 11:28:49,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360688507] [2022-12-13 11:28:49,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:28:49,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2022-12-13 11:28:49,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:28:49,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2022-12-13 11:28:49,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8323, Invalid=28733, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 11:28:49,356 INFO L87 Difference]: Start difference. First operand 385 states and 388 transitions. Second operand has 193 states, 193 states have (on average 3.316062176165803) internal successors, (640), 193 states have internal predecessors, (640), 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 11:28:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:28:53,244 INFO L93 Difference]: Finished difference Result 894 states and 1024 transitions. [2022-12-13 11:28:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-12-13 11:28:53,244 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 3.316062176165803) internal successors, (640), 193 states have internal predecessors, (640), 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 384 [2022-12-13 11:28:53,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:28:53,247 INFO L225 Difference]: With dead ends: 894 [2022-12-13 11:28:53,248 INFO L226 Difference]: Without dead ends: 639 [2022-12-13 11:28:53,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 579 SyntacticMatches, 124 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24420 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=16389, Invalid=48891, Unknown=0, NotChecked=0, Total=65280 [2022-12-13 11:28:53,251 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1045 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:28:53,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1748 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:28:53,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-12-13 11:28:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 387. [2022-12-13 11:28:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.0103626943005182) internal successors, (390), 386 states have internal predecessors, (390), 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 11:28:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 390 transitions. [2022-12-13 11:28:53,314 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 390 transitions. Word has length 384 [2022-12-13 11:28:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:28:53,314 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 390 transitions. [2022-12-13 11:28:53,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 3.316062176165803) internal successors, (640), 193 states have internal predecessors, (640), 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 11:28:53,315 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 390 transitions. [2022-12-13 11:28:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-12-13 11:28:53,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:28:53,316 INFO L195 NwaCegarLoop]: trace histogram [64, 63, 63, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:28:53,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-12-13 11:28:53,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-12-13 11:28:53,517 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:28:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:28:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash -858996211, now seen corresponding path program 75 times [2022-12-13 11:28:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:28:53,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601666493] [2022-12-13 11:28:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:28:53,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:28:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:28:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11720 backedges. 3906 proven. 7814 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:57,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:28:57,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601666493] [2022-12-13 11:28:57,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601666493] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:28:57,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870128891] [2022-12-13 11:28:57,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:28:57,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:28:57,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:28:57,697 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:28:57,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-12-13 11:28:58,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2022-12-13 11:28:58,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:28:58,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 132 conjunts are in the unsatisfiable core [2022-12-13 11:28:58,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:28:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 11720 backedges. 4032 proven. 7688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:28:58,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:29:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11720 backedges. 4032 proven. 7688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:00,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870128891] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:29:00,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:29:00,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 70 [2022-12-13 11:29:00,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777663415] [2022-12-13 11:29:00,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:29:00,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-12-13 11:29:00,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:00,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-12-13 11:29:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2220, Invalid=2610, Unknown=0, NotChecked=0, Total=4830 [2022-12-13 11:29:00,145 INFO L87 Difference]: Start difference. First operand 387 states and 390 transitions. Second operand has 70 states, 70 states have (on average 5.8428571428571425) internal successors, (409), 70 states have internal predecessors, (409), 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 11:29:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:01,325 INFO L93 Difference]: Finished difference Result 404 states and 408 transitions. [2022-12-13 11:29:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-12-13 11:29:01,326 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.8428571428571425) internal successors, (409), 70 states have internal predecessors, (409), 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 386 [2022-12-13 11:29:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:01,327 INFO L225 Difference]: With dead ends: 404 [2022-12-13 11:29:01,327 INFO L226 Difference]: Without dead ends: 402 [2022-12-13 11:29:01,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 707 SyntacticMatches, 124 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8872 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=6774, Invalid=11586, Unknown=0, NotChecked=0, Total=18360 [2022-12-13 11:29:01,328 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 204 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:01,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 648 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:29:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-12-13 11:29:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 395. [2022-12-13 11:29:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.0101522842639594) internal successors, (398), 394 states have internal predecessors, (398), 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 11:29:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 398 transitions. [2022-12-13 11:29:01,392 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 398 transitions. Word has length 386 [2022-12-13 11:29:01,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:01,392 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 398 transitions. [2022-12-13 11:29:01,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.8428571428571425) internal successors, (409), 70 states have internal predecessors, (409), 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 11:29:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 398 transitions. [2022-12-13 11:29:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-12-13 11:29:01,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:01,393 INFO L195 NwaCegarLoop]: trace histogram [65, 64, 64, 64, 64, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:01,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-12-13 11:29:01,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:29:01,594 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1311815411, now seen corresponding path program 76 times [2022-12-13 11:29:01,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:01,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528705563] [2022-12-13 11:29:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:01,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12224 backedges. 8003 proven. 4221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:07,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:07,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528705563] [2022-12-13 11:29:07,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528705563] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:29:07,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605860171] [2022-12-13 11:29:07,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:29:07,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:29:07,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:29:07,770 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:29:07,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-12-13 11:29:07,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:29:07,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:29:07,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 131 conjunts are in the unsatisfiable core [2022-12-13 11:29:07,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:29:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12224 backedges. 8192 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:12,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:29:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12224 backedges. 8192 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:15,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605860171] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:29:15,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:29:15,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131, 131] total 200 [2022-12-13 11:29:15,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798150133] [2022-12-13 11:29:15,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:29:15,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2022-12-13 11:29:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:15,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2022-12-13 11:29:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8980, Invalid=30820, Unknown=0, NotChecked=0, Total=39800 [2022-12-13 11:29:15,220 INFO L87 Difference]: Start difference. First operand 395 states and 398 transitions. Second operand has 200 states, 200 states have (on average 3.335) internal successors, (667), 200 states have internal predecessors, (667), 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 11:29:21,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:21,954 INFO L93 Difference]: Finished difference Result 1177 states and 1312 transitions. [2022-12-13 11:29:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-12-13 11:29:21,955 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 200 states have (on average 3.335) internal successors, (667), 200 states have internal predecessors, (667), 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 394 [2022-12-13 11:29:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:21,958 INFO L225 Difference]: With dead ends: 1177 [2022-12-13 11:29:21,958 INFO L226 Difference]: Without dead ends: 659 [2022-12-13 11:29:21,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 594 SyntacticMatches, 125 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36364 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=26074, Invalid=81838, Unknown=0, NotChecked=0, Total=107912 [2022-12-13 11:29:21,962 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 1404 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:21,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 2428 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 11:29:21,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-12-13 11:29:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 399. [2022-12-13 11:29:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.0100502512562815) internal successors, (402), 398 states have internal predecessors, (402), 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 11:29:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 402 transitions. [2022-12-13 11:29:22,037 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 402 transitions. Word has length 394 [2022-12-13 11:29:22,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:22,037 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 402 transitions. [2022-12-13 11:29:22,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 200 states have (on average 3.335) internal successors, (667), 200 states have internal predecessors, (667), 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 11:29:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 402 transitions. [2022-12-13 11:29:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-12-13 11:29:22,039 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:22,039 INFO L195 NwaCegarLoop]: trace histogram [66, 65, 65, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:22,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-12-13 11:29:22,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-12-13 11:29:22,240 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:22,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:22,241 INFO L85 PathProgramCache]: Analyzing trace with hash 960224893, now seen corresponding path program 77 times [2022-12-13 11:29:22,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:22,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544113938] [2022-12-13 11:29:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:22,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12482 backedges. 4160 proven. 8322 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:26,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:26,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544113938] [2022-12-13 11:29:26,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544113938] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:29:26,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061721103] [2022-12-13 11:29:26,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:29:26,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:29:26,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:29:26,632 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:29:26,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-12-13 11:29:26,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2022-12-13 11:29:26,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:29:26,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 136 conjunts are in the unsatisfiable core [2022-12-13 11:29:26,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:29:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12482 backedges. 4290 proven. 8192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:27,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:29:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12482 backedges. 4290 proven. 8192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:29,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061721103] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:29:29,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:29:29,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 72 [2022-12-13 11:29:29,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699465780] [2022-12-13 11:29:29,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:29:29,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-13 11:29:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-13 11:29:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2355, Invalid=2757, Unknown=0, NotChecked=0, Total=5112 [2022-12-13 11:29:29,685 INFO L87 Difference]: Start difference. First operand 399 states and 402 transitions. Second operand has 72 states, 72 states have (on average 5.847222222222222) internal successors, (421), 72 states have internal predecessors, (421), 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 11:29:30,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:30,699 INFO L93 Difference]: Finished difference Result 416 states and 420 transitions. [2022-12-13 11:29:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-12-13 11:29:30,699 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 5.847222222222222) internal successors, (421), 72 states have internal predecessors, (421), 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 398 [2022-12-13 11:29:30,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:30,700 INFO L225 Difference]: With dead ends: 416 [2022-12-13 11:29:30,700 INFO L226 Difference]: Without dead ends: 414 [2022-12-13 11:29:30,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 729 SyntacticMatches, 128 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9414 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7183, Invalid=12277, Unknown=0, NotChecked=0, Total=19460 [2022-12-13 11:29:30,702 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 212 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:30,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 686 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:29:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-12-13 11:29:30,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 407. [2022-12-13 11:29:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.0098522167487685) internal successors, (410), 406 states have internal predecessors, (410), 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 11:29:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 410 transitions. [2022-12-13 11:29:30,778 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 410 transitions. Word has length 398 [2022-12-13 11:29:30,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:30,778 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 410 transitions. [2022-12-13 11:29:30,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 5.847222222222222) internal successors, (421), 72 states have internal predecessors, (421), 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 11:29:30,778 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 410 transitions. [2022-12-13 11:29:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-12-13 11:29:30,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:30,780 INFO L195 NwaCegarLoop]: trace histogram [67, 66, 66, 66, 66, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:30,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-12-13 11:29:30,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:29:30,981 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:30,982 INFO L85 PathProgramCache]: Analyzing trace with hash 901014371, now seen corresponding path program 78 times [2022-12-13 11:29:30,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:30,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311276729] [2022-12-13 11:29:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:30,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13002 backedges. 8517 proven. 4485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:37,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:37,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311276729] [2022-12-13 11:29:37,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311276729] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:29:37,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853024968] [2022-12-13 11:29:37,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:29:37,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:29:37,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:29:37,630 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:29:37,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-12-13 11:29:38,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2022-12-13 11:29:38,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:29:38,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 135 conjunts are in the unsatisfiable core [2022-12-13 11:29:38,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:29:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13002 backedges. 8712 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:43,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:29:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13002 backedges. 8712 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:47,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853024968] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:29:47,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:29:47,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135, 135] total 206 [2022-12-13 11:29:47,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771986600] [2022-12-13 11:29:47,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:29:47,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2022-12-13 11:29:47,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:47,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2022-12-13 11:29:47,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9524, Invalid=32706, Unknown=0, NotChecked=0, Total=42230 [2022-12-13 11:29:47,267 INFO L87 Difference]: Start difference. First operand 407 states and 410 transitions. Second operand has 206 states, 206 states have (on average 3.3349514563106797) internal successors, (687), 206 states have internal predecessors, (687), 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 11:29:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:54,019 INFO L93 Difference]: Finished difference Result 1213 states and 1352 transitions. [2022-12-13 11:29:54,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-12-13 11:29:54,020 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 206 states have (on average 3.3349514563106797) internal successors, (687), 206 states have internal predecessors, (687), 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 406 [2022-12-13 11:29:54,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:54,021 INFO L225 Difference]: With dead ends: 1213 [2022-12-13 11:29:54,021 INFO L226 Difference]: Without dead ends: 679 [2022-12-13 11:29:54,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 612 SyntacticMatches, 129 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38623 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=27680, Invalid=86902, Unknown=0, NotChecked=0, Total=114582 [2022-12-13 11:29:54,026 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1582 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:54,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 2253 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 11:29:54,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-12-13 11:29:54,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 411. [2022-12-13 11:29:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.0097560975609756) internal successors, (414), 410 states have internal predecessors, (414), 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 11:29:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 414 transitions. [2022-12-13 11:29:54,097 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 414 transitions. Word has length 406 [2022-12-13 11:29:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:54,097 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 414 transitions. [2022-12-13 11:29:54,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 206 states have (on average 3.3349514563106797) internal successors, (687), 206 states have internal predecessors, (687), 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 11:29:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 414 transitions. [2022-12-13 11:29:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-12-13 11:29:54,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:54,099 INFO L195 NwaCegarLoop]: trace histogram [68, 67, 67, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:54,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-12-13 11:29:54,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:29:54,300 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1893633005, now seen corresponding path program 79 times [2022-12-13 11:29:54,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:54,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564646456] [2022-12-13 11:29:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13268 backedges. 4422 proven. 8846 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:58,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:58,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564646456] [2022-12-13 11:29:58,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564646456] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:29:58,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244457342] [2022-12-13 11:29:58,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:29:58,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:29:58,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:29:58,846 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:29:58,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-12-13 11:29:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 140 conjunts are in the unsatisfiable core [2022-12-13 11:29:59,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:29:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13268 backedges. 4556 proven. 8712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:59,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:30:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 13268 backedges. 4556 proven. 8712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:30:01,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244457342] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:30:01,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:30:01,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 74 [2022-12-13 11:30:01,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025975292] [2022-12-13 11:30:01,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:30:01,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-12-13 11:30:01,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:01,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-12-13 11:30:01,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2494, Invalid=2908, Unknown=0, NotChecked=0, Total=5402 [2022-12-13 11:30:01,512 INFO L87 Difference]: Start difference. First operand 411 states and 414 transitions. Second operand has 74 states, 74 states have (on average 5.851351351351352) internal successors, (433), 74 states have internal predecessors, (433), 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 11:30:02,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:02,876 INFO L93 Difference]: Finished difference Result 428 states and 432 transitions. [2022-12-13 11:30:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-12-13 11:30:02,877 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.851351351351352) internal successors, (433), 74 states have internal predecessors, (433), 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 410 [2022-12-13 11:30:02,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:02,878 INFO L225 Difference]: With dead ends: 428 [2022-12-13 11:30:02,878 INFO L226 Difference]: Without dead ends: 426 [2022-12-13 11:30:02,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 751 SyntacticMatches, 132 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9972 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7604, Invalid=12988, Unknown=0, NotChecked=0, Total=20592 [2022-12-13 11:30:02,879 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 218 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:02,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 668 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:30:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-12-13 11:30:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 419. [2022-12-13 11:30:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.0095693779904307) internal successors, (422), 418 states have internal predecessors, (422), 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 11:30:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 422 transitions. [2022-12-13 11:30:02,951 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 422 transitions. Word has length 410 [2022-12-13 11:30:02,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:02,951 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 422 transitions. [2022-12-13 11:30:02,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.851351351351352) internal successors, (433), 74 states have internal predecessors, (433), 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 11:30:02,951 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 422 transitions. [2022-12-13 11:30:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2022-12-13 11:30:02,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:02,952 INFO L195 NwaCegarLoop]: trace histogram [69, 68, 68, 68, 68, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:02,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-12-13 11:30:03,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:03,153 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:03,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:03,154 INFO L85 PathProgramCache]: Analyzing trace with hash -934633261, now seen corresponding path program 80 times [2022-12-13 11:30:03,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:03,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731508374] [2022-12-13 11:30:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:03,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13804 backedges. 9047 proven. 4757 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:30:10,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:10,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731508374] [2022-12-13 11:30:10,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731508374] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:10,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87795238] [2022-12-13 11:30:10,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:30:10,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:10,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:10,221 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:10,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-12-13 11:30:10,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:30:10,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:30:10,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 138 conjunts are in the unsatisfiable core [2022-12-13 11:30:10,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:30:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 13804 backedges. 9246 proven. 4556 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:30:15,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:30:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13804 backedges. 9246 proven. 4556 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:30:18,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87795238] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:30:18,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:30:18,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 138, 138] total 209 [2022-12-13 11:30:18,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137546204] [2022-12-13 11:30:18,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:30:18,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2022-12-13 11:30:18,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2022-12-13 11:30:18,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9733, Invalid=33739, Unknown=0, NotChecked=0, Total=43472 [2022-12-13 11:30:18,631 INFO L87 Difference]: Start difference. First operand 419 states and 422 transitions. Second operand has 209 states, 209 states have (on average 3.339712918660287) internal successors, (698), 209 states have internal predecessors, (698), 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 11:30:23,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:23,106 INFO L93 Difference]: Finished difference Result 970 states and 1110 transitions. [2022-12-13 11:30:23,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-12-13 11:30:23,106 INFO L78 Accepts]: Start accepts. Automaton has has 209 states, 209 states have (on average 3.339712918660287) internal successors, (698), 209 states have internal predecessors, (698), 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 418 [2022-12-13 11:30:23,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:23,109 INFO L225 Difference]: With dead ends: 970 [2022-12-13 11:30:23,109 INFO L226 Difference]: Without dead ends: 693 [2022-12-13 11:30:23,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1041 GetRequests, 632 SyntacticMatches, 134 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28671 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=19119, Invalid=57333, Unknown=0, NotChecked=0, Total=76452 [2022-12-13 11:30:23,112 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1189 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:23,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1753 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:30:23,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-12-13 11:30:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 421. [2022-12-13 11:30:23,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.0095238095238095) internal successors, (424), 420 states have internal predecessors, (424), 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 11:30:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 424 transitions. [2022-12-13 11:30:23,186 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 424 transitions. Word has length 418 [2022-12-13 11:30:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:23,187 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 424 transitions. [2022-12-13 11:30:23,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 209 states, 209 states have (on average 3.339712918660287) internal successors, (698), 209 states have internal predecessors, (698), 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 11:30:23,187 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 424 transitions. [2022-12-13 11:30:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-12-13 11:30:23,188 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:23,188 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:23,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-12-13 11:30:23,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-12-13 11:30:23,389 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash 591566904, now seen corresponding path program 81 times [2022-12-13 11:30:23,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:23,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634734925] [2022-12-13 11:30:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:23,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13940 backedges. 9047 proven. 4893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:30:30,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:30,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634734925] [2022-12-13 11:30:30,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634734925] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:30,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802383335] [2022-12-13 11:30:30,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:30:30,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:30,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:30,722 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:30,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-12-13 11:30:31,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2022-12-13 11:30:31,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:30:31,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 140 conjunts are in the unsatisfiable core [2022-12-13 11:30:31,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:30:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 13940 backedges. 9248 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:30:35,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:30:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13940 backedges. 9248 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:30:40,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802383335] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:30:40,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:30:40,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140, 140] total 211 [2022-12-13 11:30:40,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887274226] [2022-12-13 11:30:40,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:30:40,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 211 states [2022-12-13 11:30:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2022-12-13 11:30:40,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9943, Invalid=34367, Unknown=0, NotChecked=0, Total=44310 [2022-12-13 11:30:40,089 INFO L87 Difference]: Start difference. First operand 421 states and 424 transitions. Second operand has 211 states, 211 states have (on average 3.3175355450236967) internal successors, (700), 211 states have internal predecessors, (700), 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 11:30:44,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:44,915 INFO L93 Difference]: Finished difference Result 978 states and 1120 transitions. [2022-12-13 11:30:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-12-13 11:30:44,915 INFO L78 Accepts]: Start accepts. Automaton has has 211 states, 211 states have (on average 3.3175355450236967) internal successors, (700), 211 states have internal predecessors, (700), 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 420 [2022-12-13 11:30:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:44,917 INFO L225 Difference]: With dead ends: 978 [2022-12-13 11:30:44,917 INFO L226 Difference]: Without dead ends: 699 [2022-12-13 11:30:44,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1047 GetRequests, 633 SyntacticMatches, 136 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29232 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=19605, Invalid=58515, Unknown=0, NotChecked=0, Total=78120 [2022-12-13 11:30:44,920 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1395 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:44,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 1728 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 11:30:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-12-13 11:30:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 423. [2022-12-13 11:30:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.009478672985782) internal successors, (426), 422 states have internal predecessors, (426), 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 11:30:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 426 transitions. [2022-12-13 11:30:44,996 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 426 transitions. Word has length 420 [2022-12-13 11:30:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:44,996 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 426 transitions. [2022-12-13 11:30:44,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 211 states, 211 states have (on average 3.3175355450236967) internal successors, (700), 211 states have internal predecessors, (700), 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 11:30:44,997 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 426 transitions. [2022-12-13 11:30:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-12-13 11:30:44,998 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:44,998 INFO L195 NwaCegarLoop]: trace histogram [70, 69, 69, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:45,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-12-13 11:30:45,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:45,199 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:45,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:45,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1608889763, now seen corresponding path program 82 times [2022-12-13 11:30:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:45,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433468724] [2022-12-13 11:30:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 14078 backedges. 4692 proven. 9386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:30:50,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:50,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433468724] [2022-12-13 11:30:50,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433468724] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:50,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090733560] [2022-12-13 11:30:50,120 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:30:50,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:50,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:50,121 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:50,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-12-13 11:30:50,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:30:50,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:30:50,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1555 conjuncts, 144 conjunts are in the unsatisfiable core [2022-12-13 11:30:50,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:30:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14078 backedges. 4830 proven. 9248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:30:50,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:30:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14078 backedges. 4830 proven. 9248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:30:53,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090733560] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:30:53,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:30:53,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 76 [2022-12-13 11:30:53,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75134180] [2022-12-13 11:30:53,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:30:53,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-12-13 11:30:53,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:53,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-12-13 11:30:53,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2637, Invalid=3063, Unknown=0, NotChecked=0, Total=5700 [2022-12-13 11:30:53,484 INFO L87 Difference]: Start difference. First operand 423 states and 426 transitions. Second operand has 76 states, 76 states have (on average 5.855263157894737) internal successors, (445), 76 states have internal predecessors, (445), 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 11:30:55,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:55,021 INFO L93 Difference]: Finished difference Result 440 states and 444 transitions. [2022-12-13 11:30:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-12-13 11:30:55,021 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 5.855263157894737) internal successors, (445), 76 states have internal predecessors, (445), 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 422 [2022-12-13 11:30:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:55,022 INFO L225 Difference]: With dead ends: 440 [2022-12-13 11:30:55,022 INFO L226 Difference]: Without dead ends: 438 [2022-12-13 11:30:55,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 773 SyntacticMatches, 136 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10546 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8037, Invalid=13719, Unknown=0, NotChecked=0, Total=21756 [2022-12-13 11:30:55,024 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 434 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:55,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 558 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:30:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-12-13 11:30:55,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 431. [2022-12-13 11:30:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.0093023255813953) internal successors, (434), 430 states have internal predecessors, (434), 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 11:30:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 434 transitions. [2022-12-13 11:30:55,112 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 434 transitions. Word has length 422 [2022-12-13 11:30:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:55,113 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 434 transitions. [2022-12-13 11:30:55,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 5.855263157894737) internal successors, (445), 76 states have internal predecessors, (445), 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 11:30:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 434 transitions. [2022-12-13 11:30:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-12-13 11:30:55,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:55,114 INFO L195 NwaCegarLoop]: trace histogram [71, 70, 70, 70, 70, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:55,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-12-13 11:30:55,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:55,315 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:55,316 INFO L85 PathProgramCache]: Analyzing trace with hash 886632259, now seen corresponding path program 83 times [2022-12-13 11:30:55,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:55,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655078815] [2022-12-13 11:30:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:55,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14630 backedges. 9593 proven. 5037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:02,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:02,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655078815] [2022-12-13 11:31:02,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655078815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:31:02,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839356399] [2022-12-13 11:31:02,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:31:02,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:02,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:31:02,834 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:31:02,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-12-13 11:31:03,280 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 71 check-sat command(s) [2022-12-13 11:31:03,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:31:03,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 143 conjunts are in the unsatisfiable core [2022-12-13 11:31:03,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:31:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14630 backedges. 9800 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:09,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:31:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14630 backedges. 9800 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:14,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839356399] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:31:14,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:31:14,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143, 143] total 218 [2022-12-13 11:31:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206829561] [2022-12-13 11:31:14,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:31:14,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 218 states [2022-12-13 11:31:14,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2022-12-13 11:31:14,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10660, Invalid=36646, Unknown=0, NotChecked=0, Total=47306 [2022-12-13 11:31:14,326 INFO L87 Difference]: Start difference. First operand 431 states and 434 transitions. Second operand has 218 states, 218 states have (on average 3.334862385321101) internal successors, (727), 218 states have internal predecessors, (727), 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 11:31:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:22,976 INFO L93 Difference]: Finished difference Result 1285 states and 1432 transitions. [2022-12-13 11:31:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-12-13 11:31:22,976 INFO L78 Accepts]: Start accepts. Automaton has has 218 states, 218 states have (on average 3.334862385321101) internal successors, (727), 218 states have internal predecessors, (727), 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 430 [2022-12-13 11:31:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:22,978 INFO L225 Difference]: With dead ends: 1285 [2022-12-13 11:31:22,978 INFO L226 Difference]: Without dead ends: 719 [2022-12-13 11:31:22,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 648 SyntacticMatches, 137 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43345 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=31036, Invalid=97486, Unknown=0, NotChecked=0, Total=128522 [2022-12-13 11:31:22,983 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1481 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 2492 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:22,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2492 Invalid, 3103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2697 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 11:31:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-12-13 11:31:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 435. [2022-12-13 11:31:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.0092165898617511) internal successors, (438), 434 states have internal predecessors, (438), 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 11:31:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 438 transitions. [2022-12-13 11:31:23,061 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 438 transitions. Word has length 430 [2022-12-13 11:31:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:23,062 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 438 transitions. [2022-12-13 11:31:23,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 218 states, 218 states have (on average 3.334862385321101) internal successors, (727), 218 states have internal predecessors, (727), 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 11:31:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 438 transitions. [2022-12-13 11:31:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-12-13 11:31:23,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:23,063 INFO L195 NwaCegarLoop]: trace histogram [72, 71, 71, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:23,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-12-13 11:31:23,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:23,265 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:23,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:23,265 INFO L85 PathProgramCache]: Analyzing trace with hash -535520819, now seen corresponding path program 84 times [2022-12-13 11:31:23,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:23,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278926994] [2022-12-13 11:31:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:23,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14912 backedges. 4970 proven. 9942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:29,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:29,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278926994] [2022-12-13 11:31:29,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278926994] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:31:29,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986650192] [2022-12-13 11:31:29,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:31:29,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:29,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:31:29,036 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:31:29,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-12-13 11:31:29,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 72 check-sat command(s) [2022-12-13 11:31:29,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:31:29,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1599 conjuncts, 148 conjunts are in the unsatisfiable core [2022-12-13 11:31:29,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:31:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14912 backedges. 5112 proven. 9800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:29,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:31:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14912 backedges. 5112 proven. 9800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:32,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986650192] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:31:32,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:31:32,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 78 [2022-12-13 11:31:32,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136290127] [2022-12-13 11:31:32,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:31:32,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-12-13 11:31:32,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-12-13 11:31:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2784, Invalid=3222, Unknown=0, NotChecked=0, Total=6006 [2022-12-13 11:31:32,752 INFO L87 Difference]: Start difference. First operand 435 states and 438 transitions. Second operand has 78 states, 78 states have (on average 5.858974358974359) internal successors, (457), 78 states have internal predecessors, (457), 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 11:31:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:34,505 INFO L93 Difference]: Finished difference Result 452 states and 456 transitions. [2022-12-13 11:31:34,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-12-13 11:31:34,505 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 5.858974358974359) internal successors, (457), 78 states have internal predecessors, (457), 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 434 [2022-12-13 11:31:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:34,507 INFO L225 Difference]: With dead ends: 452 [2022-12-13 11:31:34,507 INFO L226 Difference]: Without dead ends: 450 [2022-12-13 11:31:34,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1085 GetRequests, 795 SyntacticMatches, 140 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8482, Invalid=14470, Unknown=0, NotChecked=0, Total=22952 [2022-12-13 11:31:34,509 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 450 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:34,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 657 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:31:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-12-13 11:31:34,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 443. [2022-12-13 11:31:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.009049773755656) internal successors, (446), 442 states have internal predecessors, (446), 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 11:31:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 446 transitions. [2022-12-13 11:31:34,592 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 446 transitions. Word has length 434 [2022-12-13 11:31:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:34,592 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 446 transitions. [2022-12-13 11:31:34,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 5.858974358974359) internal successors, (457), 78 states have internal predecessors, (457), 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 11:31:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 446 transitions. [2022-12-13 11:31:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-12-13 11:31:34,594 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:34,594 INFO L195 NwaCegarLoop]: trace histogram [73, 72, 72, 72, 72, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:34,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-12-13 11:31:34,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:34,795 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:34,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash -687550797, now seen corresponding path program 85 times [2022-12-13 11:31:34,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:34,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065956859] [2022-12-13 11:31:34,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 15480 backedges. 10155 proven. 5325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:42,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:42,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065956859] [2022-12-13 11:31:42,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065956859] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:31:42,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993141865] [2022-12-13 11:31:42,945 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:31:42,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:42,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:31:42,946 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:31:42,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-12-13 11:31:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:43,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 146 conjunts are in the unsatisfiable core [2022-12-13 11:31:43,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:31:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15480 backedges. 10366 proven. 5112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:31:48,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:31:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15480 backedges. 10366 proven. 5112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:31:53,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993141865] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:31:53,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:31:53,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 146, 146] total 221 [2022-12-13 11:31:53,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683123299] [2022-12-13 11:31:53,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:31:53,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 221 states [2022-12-13 11:31:53,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2022-12-13 11:31:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10881, Invalid=37739, Unknown=0, NotChecked=0, Total=48620 [2022-12-13 11:31:53,322 INFO L87 Difference]: Start difference. First operand 443 states and 446 transitions. Second operand has 221 states, 221 states have (on average 3.339366515837104) internal successors, (738), 221 states have internal predecessors, (738), 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 11:31:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:59,286 INFO L93 Difference]: Finished difference Result 1026 states and 1174 transitions. [2022-12-13 11:31:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-12-13 11:31:59,287 INFO L78 Accepts]: Start accepts. Automaton has has 221 states, 221 states have (on average 3.339366515837104) internal successors, (738), 221 states have internal predecessors, (738), 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 442 [2022-12-13 11:31:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:59,290 INFO L225 Difference]: With dead ends: 1026 [2022-12-13 11:31:59,290 INFO L226 Difference]: Without dead ends: 733 [2022-12-13 11:31:59,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 668 SyntacticMatches, 142 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32087 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=21395, Invalid=64161, Unknown=0, NotChecked=0, Total=85556 [2022-12-13 11:31:59,294 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1292 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:59,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 1882 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:31:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-12-13 11:31:59,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 445. [2022-12-13 11:31:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.009009009009009) internal successors, (448), 444 states have internal predecessors, (448), 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 11:31:59,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 448 transitions. [2022-12-13 11:31:59,376 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 448 transitions. Word has length 442 [2022-12-13 11:31:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:59,376 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 448 transitions. [2022-12-13 11:31:59,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 221 states, 221 states have (on average 3.339366515837104) internal successors, (738), 221 states have internal predecessors, (738), 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 11:31:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 448 transitions. [2022-12-13 11:31:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-12-13 11:31:59,378 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:59,378 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:59,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-12-13 11:31:59,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:59,579 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:59,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1045833496, now seen corresponding path program 86 times [2022-12-13 11:31:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:59,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001982922] [2022-12-13 11:31:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15624 backedges. 10155 proven. 5469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:08,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:08,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001982922] [2022-12-13 11:32:08,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001982922] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:32:08,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561101989] [2022-12-13 11:32:08,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:32:08,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:32:08,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:32:08,190 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:32:08,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-12-13 11:32:08,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:32:08,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:32:08,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 148 conjunts are in the unsatisfiable core [2022-12-13 11:32:08,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:32:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 15624 backedges. 10368 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:14,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:32:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 15624 backedges. 10368 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:18,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561101989] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:32:18,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:32:18,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148, 148] total 223 [2022-12-13 11:32:18,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928025664] [2022-12-13 11:32:18,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:32:18,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 223 states [2022-12-13 11:32:18,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2022-12-13 11:32:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11103, Invalid=38403, Unknown=0, NotChecked=0, Total=49506 [2022-12-13 11:32:18,316 INFO L87 Difference]: Start difference. First operand 445 states and 448 transitions. Second operand has 223 states, 223 states have (on average 3.318385650224215) internal successors, (740), 223 states have internal predecessors, (740), 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 11:32:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:32:24,097 INFO L93 Difference]: Finished difference Result 1034 states and 1184 transitions. [2022-12-13 11:32:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-12-13 11:32:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 223 states, 223 states have (on average 3.318385650224215) internal successors, (740), 223 states have internal predecessors, (740), 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 444 [2022-12-13 11:32:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:32:24,101 INFO L225 Difference]: With dead ends: 1034 [2022-12-13 11:32:24,101 INFO L226 Difference]: Without dead ends: 739 [2022-12-13 11:32:24,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1107 GetRequests, 669 SyntacticMatches, 144 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32680 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=21909, Invalid=65411, Unknown=0, NotChecked=0, Total=87320 [2022-12-13 11:32:24,105 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1199 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:24,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1837 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:32:24,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-12-13 11:32:24,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 447. [2022-12-13 11:32:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.0089686098654709) internal successors, (450), 446 states have internal predecessors, (450), 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 11:32:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 450 transitions. [2022-12-13 11:32:24,198 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 450 transitions. Word has length 444 [2022-12-13 11:32:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:32:24,198 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 450 transitions. [2022-12-13 11:32:24,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 223 states, 223 states have (on average 3.318385650224215) internal successors, (740), 223 states have internal predecessors, (740), 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 11:32:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 450 transitions. [2022-12-13 11:32:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-12-13 11:32:24,199 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:32:24,200 INFO L195 NwaCegarLoop]: trace histogram [74, 73, 73, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:24,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-12-13 11:32:24,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:32:24,401 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:32:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash 380828221, now seen corresponding path program 87 times [2022-12-13 11:32:24,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:24,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882323993] [2022-12-13 11:32:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:24,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 15770 backedges. 5256 proven. 10514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:30,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:30,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882323993] [2022-12-13 11:32:30,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882323993] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:32:30,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207187198] [2022-12-13 11:32:30,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:32:30,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:32:30,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:32:30,052 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:32:30,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-12-13 11:32:30,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 74 check-sat command(s) [2022-12-13 11:32:30,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:32:30,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 152 conjunts are in the unsatisfiable core [2022-12-13 11:32:30,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:32:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 15770 backedges. 5402 proven. 10368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:30,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:32:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 15770 backedges. 5402 proven. 10368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:33,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207187198] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:32:33,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:32:33,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 80 [2022-12-13 11:32:33,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569604263] [2022-12-13 11:32:33,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:32:33,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-12-13 11:32:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:33,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-12-13 11:32:33,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2935, Invalid=3385, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 11:32:33,632 INFO L87 Difference]: Start difference. First operand 447 states and 450 transitions. Second operand has 80 states, 80 states have (on average 5.8625) internal successors, (469), 80 states have internal predecessors, (469), 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 11:32:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:32:34,950 INFO L93 Difference]: Finished difference Result 464 states and 468 transitions. [2022-12-13 11:32:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-12-13 11:32:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 5.8625) internal successors, (469), 80 states have internal predecessors, (469), 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 446 [2022-12-13 11:32:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:32:34,951 INFO L225 Difference]: With dead ends: 464 [2022-12-13 11:32:34,951 INFO L226 Difference]: Without dead ends: 462 [2022-12-13 11:32:34,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 817 SyntacticMatches, 144 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11742 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8939, Invalid=15241, Unknown=0, NotChecked=0, Total=24180 [2022-12-13 11:32:34,953 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 456 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:34,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 628 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:32:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-12-13 11:32:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 455. [2022-12-13 11:32:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.0088105726872247) internal successors, (458), 454 states have internal predecessors, (458), 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 11:32:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 458 transitions. [2022-12-13 11:32:35,038 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 458 transitions. Word has length 446 [2022-12-13 11:32:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:32:35,038 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 458 transitions. [2022-12-13 11:32:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 5.8625) internal successors, (469), 80 states have internal predecessors, (469), 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 11:32:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 458 transitions. [2022-12-13 11:32:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-12-13 11:32:35,040 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:32:35,040 INFO L195 NwaCegarLoop]: trace histogram [75, 74, 74, 74, 74, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:35,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-12-13 11:32:35,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-12-13 11:32:35,241 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:32:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash 389267235, now seen corresponding path program 88 times [2022-12-13 11:32:35,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:35,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849481236] [2022-12-13 11:32:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:35,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16354 backedges. 10733 proven. 5621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:44,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:44,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849481236] [2022-12-13 11:32:44,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849481236] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:32:44,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494021934] [2022-12-13 11:32:44,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:32:44,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:32:44,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:32:44,225 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:32:44,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-12-13 11:32:44,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:32:44,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:32:44,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 151 conjunts are in the unsatisfiable core [2022-12-13 11:32:44,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:32:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16354 backedges. 10952 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:50,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:32:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16354 backedges. 10952 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:55,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494021934] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:32:55,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:32:55,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151, 151] total 230 [2022-12-13 11:32:55,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847425381] [2022-12-13 11:32:55,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:32:55,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 230 states [2022-12-13 11:32:55,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:55,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2022-12-13 11:32:55,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11860, Invalid=40810, Unknown=0, NotChecked=0, Total=52670 [2022-12-13 11:32:55,317 INFO L87 Difference]: Start difference. First operand 455 states and 458 transitions. Second operand has 230 states, 230 states have (on average 3.3347826086956522) internal successors, (767), 230 states have internal predecessors, (767), 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 11:33:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:33:04,124 INFO L93 Difference]: Finished difference Result 1357 states and 1512 transitions. [2022-12-13 11:33:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2022-12-13 11:33:04,124 INFO L78 Accepts]: Start accepts. Automaton has has 230 states, 230 states have (on average 3.3347826086956522) internal successors, (767), 230 states have internal predecessors, (767), 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 454 [2022-12-13 11:33:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:33:04,126 INFO L225 Difference]: With dead ends: 1357 [2022-12-13 11:33:04,126 INFO L226 Difference]: Without dead ends: 759 [2022-12-13 11:33:04,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1206 GetRequests, 684 SyntacticMatches, 145 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48339 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=34584, Invalid=108678, Unknown=0, NotChecked=0, Total=143262 [2022-12-13 11:33:04,131 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1409 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:33:04,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 2607 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 11:33:04,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-12-13 11:33:04,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 459. [2022-12-13 11:33:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.0087336244541485) internal successors, (462), 458 states have internal predecessors, (462), 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 11:33:04,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 462 transitions. [2022-12-13 11:33:04,220 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 462 transitions. Word has length 454 [2022-12-13 11:33:04,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:33:04,220 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 462 transitions. [2022-12-13 11:33:04,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 230 states, 230 states have (on average 3.3347826086956522) internal successors, (767), 230 states have internal predecessors, (767), 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 11:33:04,220 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 462 transitions. [2022-12-13 11:33:04,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-12-13 11:33:04,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:33:04,222 INFO L195 NwaCegarLoop]: trace histogram [76, 75, 75, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:04,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-12-13 11:33:04,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:04,423 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:33:04,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:04,424 INFO L85 PathProgramCache]: Analyzing trace with hash -694490195, now seen corresponding path program 89 times [2022-12-13 11:33:04,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:04,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320744439] [2022-12-13 11:33:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:04,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16652 backedges. 5550 proven. 11102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:10,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:10,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320744439] [2022-12-13 11:33:10,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320744439] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:33:10,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978521309] [2022-12-13 11:33:10,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:33:10,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:10,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:10,747 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:33:10,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-12-13 11:33:11,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2022-12-13 11:33:11,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:33:11,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 156 conjunts are in the unsatisfiable core [2022-12-13 11:33:11,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:33:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16652 backedges. 5700 proven. 10952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:11,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:33:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 16652 backedges. 5700 proven. 10952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:15,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978521309] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:33:15,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:33:15,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 82 [2022-12-13 11:33:15,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562472455] [2022-12-13 11:33:15,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:33:15,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-12-13 11:33:15,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-12-13 11:33:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3090, Invalid=3552, Unknown=0, NotChecked=0, Total=6642 [2022-12-13 11:33:15,247 INFO L87 Difference]: Start difference. First operand 459 states and 462 transitions. Second operand has 82 states, 82 states have (on average 5.865853658536586) internal successors, (481), 82 states have internal predecessors, (481), 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 11:33:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:33:17,098 INFO L93 Difference]: Finished difference Result 476 states and 480 transitions. [2022-12-13 11:33:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-12-13 11:33:17,099 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 5.865853658536586) internal successors, (481), 82 states have internal predecessors, (481), 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 458 [2022-12-13 11:33:17,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:33:17,100 INFO L225 Difference]: With dead ends: 476 [2022-12-13 11:33:17,100 INFO L226 Difference]: Without dead ends: 474 [2022-12-13 11:33:17,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1145 GetRequests, 839 SyntacticMatches, 148 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12364 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9408, Invalid=16032, Unknown=0, NotChecked=0, Total=25440 [2022-12-13 11:33:17,103 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 470 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:33:17,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 672 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:33:17,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-12-13 11:33:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 467. [2022-12-13 11:33:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.0085836909871244) internal successors, (470), 466 states have internal predecessors, (470), 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 11:33:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 470 transitions. [2022-12-13 11:33:17,206 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 470 transitions. Word has length 458 [2022-12-13 11:33:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:33:17,206 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 470 transitions. [2022-12-13 11:33:17,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 5.865853658536586) internal successors, (481), 82 states have internal predecessors, (481), 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 11:33:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 470 transitions. [2022-12-13 11:33:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-12-13 11:33:17,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:33:17,209 INFO L195 NwaCegarLoop]: trace histogram [77, 76, 76, 76, 76, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:17,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-12-13 11:33:17,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:17,410 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:33:17,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1250640019, now seen corresponding path program 90 times [2022-12-13 11:33:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:17,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889587125] [2022-12-13 11:33:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:17,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 17252 backedges. 11327 proven. 5925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:26,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:26,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889587125] [2022-12-13 11:33:26,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889587125] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:33:26,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841991148] [2022-12-13 11:33:26,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:33:26,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:26,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:26,528 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:33:26,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-12-13 11:33:26,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 77 check-sat command(s) [2022-12-13 11:33:26,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:33:26,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 155 conjunts are in the unsatisfiable core [2022-12-13 11:33:26,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:33:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 17252 backedges. 11552 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:33,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:33:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17252 backedges. 11552 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:38,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841991148] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:33:38,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:33:38,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155, 155] total 236 [2022-12-13 11:33:38,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79210587] [2022-12-13 11:33:38,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:33:38,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 236 states [2022-12-13 11:33:38,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:38,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2022-12-13 11:33:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12484, Invalid=42976, Unknown=0, NotChecked=0, Total=55460 [2022-12-13 11:33:38,772 INFO L87 Difference]: Start difference. First operand 467 states and 470 transitions. Second operand has 236 states, 236 states have (on average 3.3347457627118646) internal successors, (787), 236 states have internal predecessors, (787), 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 11:33:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:33:47,994 INFO L93 Difference]: Finished difference Result 1393 states and 1552 transitions. [2022-12-13 11:33:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-12-13 11:33:47,994 INFO L78 Accepts]: Start accepts. Automaton has has 236 states, 236 states have (on average 3.3347457627118646) internal successors, (787), 236 states have internal predecessors, (787), 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 466 [2022-12-13 11:33:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:33:47,995 INFO L225 Difference]: With dead ends: 1393 [2022-12-13 11:33:47,995 INFO L226 Difference]: Without dead ends: 779 [2022-12-13 11:33:48,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 702 SyntacticMatches, 149 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50938 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=36430, Invalid=114502, Unknown=0, NotChecked=0, Total=150932 [2022-12-13 11:33:48,003 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1457 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 3260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:33:48,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 2633 Invalid, 3260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 11:33:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-12-13 11:33:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 471. [2022-12-13 11:33:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.0085106382978724) internal successors, (474), 470 states have internal predecessors, (474), 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 11:33:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 474 transitions. [2022-12-13 11:33:48,107 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 474 transitions. Word has length 466 [2022-12-13 11:33:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:33:48,107 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 474 transitions. [2022-12-13 11:33:48,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 236 states, 236 states have (on average 3.3347457627118646) internal successors, (787), 236 states have internal predecessors, (787), 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 11:33:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 474 transitions. [2022-12-13 11:33:48,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-12-13 11:33:48,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:33:48,109 INFO L195 NwaCegarLoop]: trace histogram [78, 77, 77, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:48,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-12-13 11:33:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2022-12-13 11:33:48,310 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:33:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1060236829, now seen corresponding path program 91 times [2022-12-13 11:33:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:48,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144613622] [2022-12-13 11:33:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:48,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 17558 backedges. 5852 proven. 11706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:54,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:54,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144613622] [2022-12-13 11:33:54,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144613622] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:33:54,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316848029] [2022-12-13 11:33:54,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:33:54,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:54,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:54,608 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:33:54,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-12-13 11:33:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:54,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 160 conjunts are in the unsatisfiable core [2022-12-13 11:33:54,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:33:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 17558 backedges. 6006 proven. 11552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:55,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:33:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17558 backedges. 6006 proven. 11552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:58,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316848029] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:33:58,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:33:58,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 84 [2022-12-13 11:33:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282693007] [2022-12-13 11:33:58,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:33:58,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-12-13 11:33:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-12-13 11:33:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3249, Invalid=3723, Unknown=0, NotChecked=0, Total=6972 [2022-12-13 11:33:58,838 INFO L87 Difference]: Start difference. First operand 471 states and 474 transitions. Second operand has 84 states, 84 states have (on average 5.869047619047619) internal successors, (493), 84 states have internal predecessors, (493), 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 11:34:00,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:34:00,544 INFO L93 Difference]: Finished difference Result 488 states and 492 transitions. [2022-12-13 11:34:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-12-13 11:34:00,545 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 5.869047619047619) internal successors, (493), 84 states have internal predecessors, (493), 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 470 [2022-12-13 11:34:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:34:00,546 INFO L225 Difference]: With dead ends: 488 [2022-12-13 11:34:00,546 INFO L226 Difference]: Without dead ends: 486 [2022-12-13 11:34:00,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 861 SyntacticMatches, 152 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13002 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=9889, Invalid=16843, Unknown=0, NotChecked=0, Total=26732 [2022-12-13 11:34:00,548 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 480 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:34:00,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 705 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:34:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-12-13 11:34:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 479. [2022-12-13 11:34:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.00836820083682) internal successors, (482), 478 states have internal predecessors, (482), 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 11:34:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 482 transitions. [2022-12-13 11:34:00,643 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 482 transitions. Word has length 470 [2022-12-13 11:34:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:34:00,643 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 482 transitions. [2022-12-13 11:34:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 5.869047619047619) internal successors, (493), 84 states have internal predecessors, (493), 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 11:34:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 482 transitions. [2022-12-13 11:34:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-12-13 11:34:00,645 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:34:00,645 INFO L195 NwaCegarLoop]: trace histogram [79, 78, 78, 78, 78, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:34:00,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-12-13 11:34:00,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:34:00,846 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:34:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:00,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1829711101, now seen corresponding path program 92 times [2022-12-13 11:34:00,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:34:00,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904854811] [2022-12-13 11:34:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:00,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:34:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18174 backedges. 11937 proven. 6237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:10,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:34:10,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904854811] [2022-12-13 11:34:10,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904854811] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:34:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198097925] [2022-12-13 11:34:10,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:34:10,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:34:10,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:34:10,376 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:34:10,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-12-13 11:34:10,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:34:10,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:34:10,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 158 conjunts are in the unsatisfiable core [2022-12-13 11:34:10,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18174 backedges. 12166 proven. 6006 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:34:17,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:34:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18174 backedges. 12166 proven. 6006 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 11:34:22,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198097925] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:34:22,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:34:22,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 158, 158] total 239 [2022-12-13 11:34:22,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287962426] [2022-12-13 11:34:22,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:34:22,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 239 states [2022-12-13 11:34:22,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:34:22,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2022-12-13 11:34:22,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12723, Invalid=44159, Unknown=0, NotChecked=0, Total=56882 [2022-12-13 11:34:22,800 INFO L87 Difference]: Start difference. First operand 479 states and 482 transitions. Second operand has 239 states, 239 states have (on average 3.3389121338912133) internal successors, (798), 239 states have internal predecessors, (798), 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 11:34:29,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:34:29,651 INFO L93 Difference]: Finished difference Result 1110 states and 1270 transitions. [2022-12-13 11:34:29,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-12-13 11:34:29,651 INFO L78 Accepts]: Start accepts. Automaton has has 239 states, 239 states have (on average 3.3389121338912133) internal successors, (798), 239 states have internal predecessors, (798), 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 478 [2022-12-13 11:34:29,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:34:29,653 INFO L225 Difference]: With dead ends: 1110 [2022-12-13 11:34:29,653 INFO L226 Difference]: Without dead ends: 793 [2022-12-13 11:34:29,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 722 SyntacticMatches, 154 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37571 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=25049, Invalid=75123, Unknown=0, NotChecked=0, Total=100172 [2022-12-13 11:34:29,658 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1323 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:34:29,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 2093 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 11:34:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-12-13 11:34:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 481. [2022-12-13 11:34:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.0083333333333333) internal successors, (484), 480 states have internal predecessors, (484), 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 11:34:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 484 transitions. [2022-12-13 11:34:29,755 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 484 transitions. Word has length 478 [2022-12-13 11:34:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:34:29,755 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 484 transitions. [2022-12-13 11:34:29,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 239 states, 239 states have (on average 3.3389121338912133) internal successors, (798), 239 states have internal predecessors, (798), 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 11:34:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 484 transitions. [2022-12-13 11:34:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-12-13 11:34:29,757 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:34:29,757 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:34:29,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-12-13 11:34:29,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:34:29,958 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:34:29,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:29,959 INFO L85 PathProgramCache]: Analyzing trace with hash -676553496, now seen corresponding path program 93 times [2022-12-13 11:34:29,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:34:29,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058328905] [2022-12-13 11:34:29,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:29,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:34:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18330 backedges. 11937 proven. 6393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:39,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:34:39,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058328905] [2022-12-13 11:34:39,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058328905] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:34:39,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859240084] [2022-12-13 11:34:39,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:34:39,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:34:39,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:34:39,685 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:34:39,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-12-13 11:34:40,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 79 check-sat command(s) [2022-12-13 11:34:40,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:34:40,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 160 conjunts are in the unsatisfiable core [2022-12-13 11:34:40,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18330 backedges. 12168 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:46,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:34:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 18330 backedges. 12168 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:51,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859240084] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:34:51,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:34:51,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160, 160] total 241 [2022-12-13 11:34:51,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883571741] [2022-12-13 11:34:51,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:34:51,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 241 states [2022-12-13 11:34:51,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:34:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2022-12-13 11:34:51,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12963, Invalid=44877, Unknown=0, NotChecked=0, Total=57840 [2022-12-13 11:34:51,892 INFO L87 Difference]: Start difference. First operand 481 states and 484 transitions. Second operand has 241 states, 241 states have (on average 3.319502074688797) internal successors, (800), 241 states have internal predecessors, (800), 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 11:34:58,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:34:58,451 INFO L93 Difference]: Finished difference Result 1118 states and 1280 transitions. [2022-12-13 11:34:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-12-13 11:34:58,451 INFO L78 Accepts]: Start accepts. Automaton has has 241 states, 241 states have (on average 3.319502074688797) internal successors, (800), 241 states have internal predecessors, (800), 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 480 [2022-12-13 11:34:58,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:34:58,453 INFO L225 Difference]: With dead ends: 1118 [2022-12-13 11:34:58,453 INFO L226 Difference]: Without dead ends: 799 [2022-12-13 11:34:58,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 723 SyntacticMatches, 156 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38212 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=25605, Invalid=76475, Unknown=0, NotChecked=0, Total=102080 [2022-12-13 11:34:58,458 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1589 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:34:58,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1859 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:34:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-12-13 11:34:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 483. [2022-12-13 11:34:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.008298755186722) internal successors, (486), 482 states have internal predecessors, (486), 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 11:34:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 486 transitions. [2022-12-13 11:34:58,566 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 486 transitions. Word has length 480 [2022-12-13 11:34:58,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:34:58,567 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 486 transitions. [2022-12-13 11:34:58,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 241 states, 241 states have (on average 3.319502074688797) internal successors, (800), 241 states have internal predecessors, (800), 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 11:34:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 486 transitions. [2022-12-13 11:34:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-12-13 11:34:58,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:34:58,569 INFO L195 NwaCegarLoop]: trace histogram [80, 79, 79, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:34:58,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-12-13 11:34:58,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-12-13 11:34:58,770 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:34:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:58,771 INFO L85 PathProgramCache]: Analyzing trace with hash -593657459, now seen corresponding path program 94 times [2022-12-13 11:34:58,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:34:58,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461550808] [2022-12-13 11:34:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:58,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:34:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18488 backedges. 6162 proven. 12326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:05,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:05,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461550808] [2022-12-13 11:35:05,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461550808] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:35:05,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686424089] [2022-12-13 11:35:05,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:35:05,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:35:05,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:35:05,567 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:35:05,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-12-13 11:35:05,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:35:05,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:35:05,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 164 conjunts are in the unsatisfiable core [2022-12-13 11:35:05,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18488 backedges. 6320 proven. 12168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:06,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:35:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18488 backedges. 6320 proven. 12168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:09,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686424089] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:35:09,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:35:09,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 86 [2022-12-13 11:35:09,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547787759] [2022-12-13 11:35:09,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:35:09,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-12-13 11:35:09,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:09,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-12-13 11:35:09,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3412, Invalid=3898, Unknown=0, NotChecked=0, Total=7310 [2022-12-13 11:35:09,852 INFO L87 Difference]: Start difference. First operand 483 states and 486 transitions. Second operand has 86 states, 86 states have (on average 5.872093023255814) internal successors, (505), 86 states have internal predecessors, (505), 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 11:35:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:35:11,594 INFO L93 Difference]: Finished difference Result 500 states and 504 transitions. [2022-12-13 11:35:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-12-13 11:35:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 5.872093023255814) internal successors, (505), 86 states have internal predecessors, (505), 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 482 [2022-12-13 11:35:11,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:35:11,595 INFO L225 Difference]: With dead ends: 500 [2022-12-13 11:35:11,595 INFO L226 Difference]: Without dead ends: 498 [2022-12-13 11:35:11,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 883 SyntacticMatches, 156 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13656 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=10382, Invalid=17674, Unknown=0, NotChecked=0, Total=28056 [2022-12-13 11:35:11,597 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 494 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:35:11,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 689 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:35:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-12-13 11:35:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 491. [2022-12-13 11:35:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.0081632653061225) internal successors, (494), 490 states have internal predecessors, (494), 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 11:35:11,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 494 transitions. [2022-12-13 11:35:11,695 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 494 transitions. Word has length 482 [2022-12-13 11:35:11,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:35:11,695 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 494 transitions. [2022-12-13 11:35:11,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 5.872093023255814) internal successors, (505), 86 states have internal predecessors, (505), 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 11:35:11,695 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 494 transitions. [2022-12-13 11:35:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-12-13 11:35:11,697 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:35:11,697 INFO L195 NwaCegarLoop]: trace histogram [81, 80, 80, 80, 80, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:11,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-12-13 11:35:11,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-12-13 11:35:11,898 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:35:11,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:11,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1089866125, now seen corresponding path program 95 times [2022-12-13 11:35:11,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:11,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426674757] [2022-12-13 11:35:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:11,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19120 backedges. 12563 proven. 6557 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:23,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426674757] [2022-12-13 11:35:23,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426674757] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:35:23,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605809754] [2022-12-13 11:35:23,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:35:23,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:35:23,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:35:23,306 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:35:23,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e41a15b5-778c-4a8c-8c4d-52b8ddc4c647/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-12-13 11:35:23,823 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2022-12-13 11:35:23,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:35:23,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 163 conjunts are in the unsatisfiable core [2022-12-13 11:35:23,842 INFO L286 TraceCheckSpWp]: Computing forward predicates...