./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Ackermann04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Ackermann04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:00:33,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:00:33,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:00:33,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:00:33,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:00:33,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:00:33,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:00:33,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:00:33,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:00:33,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:00:33,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:00:33,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:00:33,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:00:33,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:00:33,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:00:33,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:00:33,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:00:33,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:00:33,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:00:33,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:00:33,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:00:33,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:00:33,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:00:33,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:00:33,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:00:33,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:00:33,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:00:33,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:00:33,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:00:33,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:00:33,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:00:33,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:00:33,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:00:33,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:00:33,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:00:33,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:00:33,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:00:33,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:00:33,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:00:33,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:00:33,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:00:33,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:00:33,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:00:33,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:00:33,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:00:33,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:00:33,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:00:33,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:00:33,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:00:33,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:00:33,405 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:00:33,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:00:33,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:00:33,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:00:33,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:00:33,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:00:33,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:00:33,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:00:33,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:00:33,411 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:00:33,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:00:33,412 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:00:33,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:00:33,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:00:33,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:00:33,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:00:33,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:00:33,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:00:33,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:00:33,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:00:33,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:00:33,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:00:33,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:00:33,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:00:33,417 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:00:33,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:00:33,417 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_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 [2022-11-25 18:00:33,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:00:33,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:00:33,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:00:33,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:00:33,817 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:00:33,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/recursive/Ackermann04.c [2022-11-25 18:00:36,861 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:00:37,058 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:00:37,059 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/sv-benchmarks/c/recursive/Ackermann04.c [2022-11-25 18:00:37,066 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/data/3411411bd/6fe7d2da25694a35bb9da7dca6280d77/FLAG49ce3dae3 [2022-11-25 18:00:37,090 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/data/3411411bd/6fe7d2da25694a35bb9da7dca6280d77 [2022-11-25 18:00:37,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:00:37,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:00:37,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:00:37,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:00:37,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:00:37,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f652f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37, skipping insertion in model container [2022-11-25 18:00:37,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:00:37,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:00:37,341 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_a14c0efd-b650-4339-88fd-6d44b347cc6a/sv-benchmarks/c/recursive/Ackermann04.c[1166,1179] [2022-11-25 18:00:37,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:00:37,367 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:00:37,388 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_a14c0efd-b650-4339-88fd-6d44b347cc6a/sv-benchmarks/c/recursive/Ackermann04.c[1166,1179] [2022-11-25 18:00:37,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:00:37,427 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:00:37,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37 WrapperNode [2022-11-25 18:00:37,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:00:37,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:00:37,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:00:37,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:00:37,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,465 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-11-25 18:00:37,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:00:37,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:00:37,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:00:37,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:00:37,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,494 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:00:37,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:00:37,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:00:37,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:00:37,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (1/1) ... [2022-11-25 18:00:37,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:00:37,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:37,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:00:37,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:00:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:00:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:00:37,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:00:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2022-11-25 18:00:37,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2022-11-25 18:00:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:00:37,637 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:00:37,639 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:00:37,758 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:00:37,764 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:00:37,764 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:00:37,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:37 BoogieIcfgContainer [2022-11-25 18:00:37,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:00:37,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:00:37,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:00:37,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:00:37,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:00:37" (1/3) ... [2022-11-25 18:00:37,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218723d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:37, skipping insertion in model container [2022-11-25 18:00:37,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:37" (2/3) ... [2022-11-25 18:00:37,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218723d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:37, skipping insertion in model container [2022-11-25 18:00:37,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:37" (3/3) ... [2022-11-25 18:00:37,776 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2022-11-25 18:00:37,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:00:37,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:00:37,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:00:37,885 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;@4176f8ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:00:37,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:00:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 18:00:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 18:00:37,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:37,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:37,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:37,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:37,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1470704041, now seen corresponding path program 1 times [2022-11-25 18:00:37,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:37,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248500783] [2022-11-25 18:00:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:37,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:38,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:38,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:38,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248500783] [2022-11-25 18:00:38,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248500783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:38,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:38,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:00:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910659183] [2022-11-25 18:00:38,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:38,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:00:38,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:00:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:00:38,306 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:00:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:38,427 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2022-11-25 18:00:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:00:38,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-25 18:00:38,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:38,440 INFO L225 Difference]: With dead ends: 51 [2022-11-25 18:00:38,440 INFO L226 Difference]: Without dead ends: 25 [2022-11-25 18:00:38,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:00:38,447 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:38,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 72 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:00:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-25 18:00:38,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-25 18:00:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 18:00:38,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-11-25 18:00:38,492 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 12 [2022-11-25 18:00:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:38,493 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-11-25 18:00:38,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:00:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-11-25 18:00:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 18:00:38,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:38,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:38,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:00:38,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:38,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:38,497 INFO L85 PathProgramCache]: Analyzing trace with hash 941922339, now seen corresponding path program 1 times [2022-11-25 18:00:38,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:38,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600020320] [2022-11-25 18:00:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:38,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:38,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:00:38,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:38,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600020320] [2022-11-25 18:00:38,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600020320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:38,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268456392] [2022-11-25 18:00:38,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:38,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:38,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:38,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:38,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:00:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:38,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:00:38,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:00:38,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:00:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:00:39,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268456392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:00:39,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:00:39,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 18:00:39,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603516678] [2022-11-25 18:00:39,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:00:39,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 18:00:39,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:39,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 18:00:39,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:00:39,115 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-25 18:00:39,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:39,284 INFO L93 Difference]: Finished difference Result 74 states and 126 transitions. [2022-11-25 18:00:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:00:39,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 19 [2022-11-25 18:00:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:39,288 INFO L225 Difference]: With dead ends: 74 [2022-11-25 18:00:39,288 INFO L226 Difference]: Without dead ends: 50 [2022-11-25 18:00:39,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:00:39,291 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:39,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 91 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:00:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-25 18:00:39,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-25 18:00:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 10 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (27), 12 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-25 18:00:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2022-11-25 18:00:39,307 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 19 [2022-11-25 18:00:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:39,307 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2022-11-25 18:00:39,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-25 18:00:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2022-11-25 18:00:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 18:00:39,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:39,311 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:39,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:00:39,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 18:00:39,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:39,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:39,518 INFO L85 PathProgramCache]: Analyzing trace with hash -574784801, now seen corresponding path program 1 times [2022-11-25 18:00:39,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:39,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130337333] [2022-11-25 18:00:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:39,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:00:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:00:40,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:40,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130337333] [2022-11-25 18:00:40,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130337333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:40,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446866837] [2022-11-25 18:00:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:40,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:40,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:40,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:40,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:00:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:40,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:00:40,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 18:00:40,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:00:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 18:00:40,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446866837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:00:40,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:00:40,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2022-11-25 18:00:40,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761156900] [2022-11-25 18:00:40,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:00:40,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 18:00:40,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:40,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 18:00:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:00:40,999 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 18:00:41,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:41,158 INFO L93 Difference]: Finished difference Result 120 states and 227 transitions. [2022-11-25 18:00:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:00:41,159 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) Word has length 45 [2022-11-25 18:00:41,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:41,170 INFO L225 Difference]: With dead ends: 120 [2022-11-25 18:00:41,170 INFO L226 Difference]: Without dead ends: 53 [2022-11-25 18:00:41,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-11-25 18:00:41,177 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:41,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 81 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:00:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-25 18:00:41,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-25 18:00:41,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (28), 11 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-25 18:00:41,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2022-11-25 18:00:41,200 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 45 [2022-11-25 18:00:41,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:41,200 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2022-11-25 18:00:41,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 18:00:41,201 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2022-11-25 18:00:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 18:00:41,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:41,205 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:41,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:00:41,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:41,406 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash -749766204, now seen corresponding path program 2 times [2022-11-25 18:00:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:41,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857743452] [2022-11-25 18:00:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:41,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:41,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:42,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:42,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:42,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:42,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:00:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:42,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 18:00:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-25 18:00:42,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:42,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857743452] [2022-11-25 18:00:42,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857743452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226242835] [2022-11-25 18:00:42,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:00:42,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:42,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:42,298 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:42,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:00:42,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:00:42,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:00:42,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 18:00:42,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-25 18:00:42,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:00:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-25 18:00:44,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226242835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:00:44,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:00:44,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2022-11-25 18:00:44,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080561462] [2022-11-25 18:00:44,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:00:44,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-25 18:00:44,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:44,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-25 18:00:44,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-11-25 18:00:44,222 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (13), 2 states have call predecessors, (13), 12 states have return successors, (24), 15 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-25 18:00:44,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:44,646 INFO L93 Difference]: Finished difference Result 106 states and 183 transitions. [2022-11-25 18:00:44,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 18:00:44,647 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (13), 2 states have call predecessors, (13), 12 states have return successors, (24), 15 states have call predecessors, (24), 9 states have call successors, (24) Word has length 79 [2022-11-25 18:00:44,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:44,650 INFO L225 Difference]: With dead ends: 106 [2022-11-25 18:00:44,650 INFO L226 Difference]: Without dead ends: 58 [2022-11-25 18:00:44,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2022-11-25 18:00:44,653 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:44,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 198 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:00:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-25 18:00:44,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2022-11-25 18:00:44,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (24), 11 states have call predecessors, (24), 8 states have call successors, (24) [2022-11-25 18:00:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2022-11-25 18:00:44,666 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 72 transitions. Word has length 79 [2022-11-25 18:00:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:44,667 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 72 transitions. [2022-11-25 18:00:44,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (13), 2 states have call predecessors, (13), 12 states have return successors, (24), 15 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-25 18:00:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 72 transitions. [2022-11-25 18:00:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-25 18:00:44,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:44,674 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 18, 13, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:44,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:00:44,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:44,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:44,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:44,880 INFO L85 PathProgramCache]: Analyzing trace with hash 373404425, now seen corresponding path program 3 times [2022-11-25 18:00:44,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:44,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246877762] [2022-11-25 18:00:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:44,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:45,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:45,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:45,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:00:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:00:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:00:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:00:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:00:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:00:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:00:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:00:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 435 proven. 665 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2022-11-25 18:00:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:46,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246877762] [2022-11-25 18:00:46,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246877762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:46,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032732079] [2022-11-25 18:00:46,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:00:46,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:46,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:46,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:00:46,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-11-25 18:00:46,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:00:46,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:00:46,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 538 proven. 48 refuted. 0 times theorem prover too weak. 1721 trivial. 0 not checked. [2022-11-25 18:00:46,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:00:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 538 proven. 55 refuted. 0 times theorem prover too weak. 1714 trivial. 0 not checked. [2022-11-25 18:00:47,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032732079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:00:47,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:00:47,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 19 [2022-11-25 18:00:47,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837693129] [2022-11-25 18:00:47,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:00:47,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 18:00:47,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:47,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 18:00:47,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:00:47,865 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 11 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-25 18:00:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:48,152 INFO L93 Difference]: Finished difference Result 133 states and 250 transitions. [2022-11-25 18:00:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:00:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 11 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) Word has length 210 [2022-11-25 18:00:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:48,155 INFO L225 Difference]: With dead ends: 133 [2022-11-25 18:00:48,155 INFO L226 Difference]: Without dead ends: 85 [2022-11-25 18:00:48,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 473 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2022-11-25 18:00:48,157 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 94 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:48,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 153 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:00:48,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-25 18:00:48,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2022-11-25 18:00:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 13 states have call successors, (13), 7 states have call predecessors, (13), 11 states have return successors, (46), 16 states have call predecessors, (46), 13 states have call successors, (46) [2022-11-25 18:00:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 117 transitions. [2022-11-25 18:00:48,172 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 117 transitions. Word has length 210 [2022-11-25 18:00:48,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:48,173 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 117 transitions. [2022-11-25 18:00:48,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 11 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-25 18:00:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 117 transitions. [2022-11-25 18:00:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-25 18:00:48,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:48,175 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 10, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:48,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:00:48,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:48,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash -270180431, now seen corresponding path program 4 times [2022-11-25 18:00:48,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:48,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408607242] [2022-11-25 18:00:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:48,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:00:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 18:00:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:00:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 249 proven. 113 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2022-11-25 18:00:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408607242] [2022-11-25 18:00:49,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408607242] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003565252] [2022-11-25 18:00:49,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:00:49,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:49,111 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:49,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:00:49,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:00:49,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:00:49,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 18:00:49,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 236 proven. 115 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-25 18:00:49,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:00:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 252 proven. 113 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-11-25 18:00:50,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003565252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:00:50,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:00:50,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 23 [2022-11-25 18:00:50,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768729019] [2022-11-25 18:00:50,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:00:50,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 18:00:50,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 18:00:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-25 18:00:50,980 INFO L87 Difference]: Start difference. First operand 77 states and 117 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 21 states have internal predecessors, (63), 11 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (23), 10 states have call predecessors, (23), 11 states have call successors, (23) [2022-11-25 18:00:51,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:51,405 INFO L93 Difference]: Finished difference Result 168 states and 314 transitions. [2022-11-25 18:00:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 18:00:51,405 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 21 states have internal predecessors, (63), 11 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (23), 10 states have call predecessors, (23), 11 states have call successors, (23) Word has length 118 [2022-11-25 18:00:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:51,408 INFO L225 Difference]: With dead ends: 168 [2022-11-25 18:00:51,408 INFO L226 Difference]: Without dead ends: 100 [2022-11-25 18:00:51,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 250 SyntacticMatches, 13 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1195, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 18:00:51,410 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:51,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 153 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:00:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-25 18:00:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-25 18:00:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 68 states have internal predecessors, (75), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (67), 22 states have call predecessors, (67), 18 states have call successors, (67) [2022-11-25 18:00:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 160 transitions. [2022-11-25 18:00:51,446 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 160 transitions. Word has length 118 [2022-11-25 18:00:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:51,447 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 160 transitions. [2022-11-25 18:00:51,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 21 states have internal predecessors, (63), 11 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (23), 10 states have call predecessors, (23), 11 states have call successors, (23) [2022-11-25 18:00:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 160 transitions. [2022-11-25 18:00:51,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-25 18:00:51,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:51,452 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:51,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:00:51,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:51,659 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1892896752, now seen corresponding path program 5 times [2022-11-25 18:00:51,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:51,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279408485] [2022-11-25 18:00:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:51,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:00:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:00:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-25 18:00:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:00:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:00:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 18:00:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 162 proven. 425 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2022-11-25 18:00:52,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:52,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279408485] [2022-11-25 18:00:52,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279408485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:52,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435228489] [2022-11-25 18:00:52,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 18:00:52,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:52,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:52,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:52,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:00:52,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-25 18:00:52,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:00:52,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 18:00:52,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 715 proven. 114 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2022-11-25 18:00:52,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:00:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 165 proven. 425 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2022-11-25 18:00:54,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435228489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:00:54,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:00:54,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 17] total 24 [2022-11-25 18:00:54,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951311599] [2022-11-25 18:00:54,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:00:54,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 18:00:54,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:54,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 18:00:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:00:54,830 INFO L87 Difference]: Start difference. First operand 100 states and 160 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 21 states have internal predecessors, (71), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2022-11-25 18:00:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:55,346 INFO L93 Difference]: Finished difference Result 191 states and 332 transitions. [2022-11-25 18:00:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-25 18:00:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 21 states have internal predecessors, (71), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) Word has length 157 [2022-11-25 18:00:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:55,349 INFO L225 Difference]: With dead ends: 191 [2022-11-25 18:00:55,349 INFO L226 Difference]: Without dead ends: 100 [2022-11-25 18:00:55,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 340 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=461, Invalid=1519, Unknown=0, NotChecked=0, Total=1980 [2022-11-25 18:00:55,352 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 70 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:55,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 180 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:00:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-25 18:00:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-25 18:00:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 68 states have internal predecessors, (75), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (59), 22 states have call predecessors, (59), 18 states have call successors, (59) [2022-11-25 18:00:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 152 transitions. [2022-11-25 18:00:55,366 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 152 transitions. Word has length 157 [2022-11-25 18:00:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:55,367 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 152 transitions. [2022-11-25 18:00:55,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 21 states have internal predecessors, (71), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2022-11-25 18:00:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 152 transitions. [2022-11-25 18:00:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-25 18:00:55,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:55,369 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:55,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:00:55,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:55,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:55,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1701842998, now seen corresponding path program 6 times [2022-11-25 18:00:55,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:55,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733556319] [2022-11-25 18:00:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:55,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:00:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:00:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:00:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:00:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:00:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:00:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:00:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:00:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:00:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2022-11-25 18:00:56,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:56,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733556319] [2022-11-25 18:00:56,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733556319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:56,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982071074] [2022-11-25 18:00:56,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 18:00:56,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:56,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:56,917 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:56,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:00:57,126 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-25 18:00:57,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:00:57,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-25 18:00:57,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2022-11-25 18:00:57,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:01:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-25 18:01:01,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982071074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:01:01,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:01:01,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2022-11-25 18:01:01,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277008450] [2022-11-25 18:01:01,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:01:01,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-25 18:01:01,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-25 18:01:01,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 18:01:01,816 INFO L87 Difference]: Start difference. First operand 100 states and 152 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) [2022-11-25 18:01:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:02,694 INFO L93 Difference]: Finished difference Result 206 states and 359 transitions. [2022-11-25 18:01:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-25 18:01:02,695 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) Word has length 157 [2022-11-25 18:01:02,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:02,698 INFO L225 Difference]: With dead ends: 206 [2022-11-25 18:01:02,698 INFO L226 Difference]: Without dead ends: 115 [2022-11-25 18:01:02,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 330 SyntacticMatches, 17 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=799, Invalid=3361, Unknown=0, NotChecked=0, Total=4160 [2022-11-25 18:01:02,702 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:02,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 255 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:01:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-25 18:01:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-11-25 18:01:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.105263157894737) internal successors, (84), 77 states have internal predecessors, (84), 21 states have call successors, (21), 9 states have call predecessors, (21), 17 states have return successors, (80), 28 states have call predecessors, (80), 21 states have call successors, (80) [2022-11-25 18:01:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 185 transitions. [2022-11-25 18:01:02,729 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 185 transitions. Word has length 157 [2022-11-25 18:01:02,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:02,731 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 185 transitions. [2022-11-25 18:01:02,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) [2022-11-25 18:01:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 185 transitions. [2022-11-25 18:01:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-25 18:01:02,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:02,737 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:02,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 18:01:02,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:01:02,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash 332854534, now seen corresponding path program 7 times [2022-11-25 18:01:02,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:02,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388503618] [2022-11-25 18:01:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:02,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:01:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:01:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:01:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:01:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:01:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:01:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:01:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:03,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:01:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:01:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:01:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 18:01:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 18:01:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2022-11-25 18:01:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:01:04,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388503618] [2022-11-25 18:01:04,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388503618] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:01:04,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245346211] [2022-11-25 18:01:04,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 18:01:04,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:01:04,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:01:04,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:01:04,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:01:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:04,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-25 18:01:04,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:01:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2022-11-25 18:01:04,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:01:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 711 proven. 75 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-11-25 18:01:11,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245346211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:01:11,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:01:11,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 38 [2022-11-25 18:01:11,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714406429] [2022-11-25 18:01:11,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:01:11,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-25 18:01:11,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-25 18:01:11,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 18:01:11,775 INFO L87 Difference]: Start difference. First operand 115 states and 185 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-25 18:01:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:13,014 INFO L93 Difference]: Finished difference Result 155 states and 272 transitions. [2022-11-25 18:01:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-25 18:01:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) Word has length 183 [2022-11-25 18:01:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:13,017 INFO L225 Difference]: With dead ends: 155 [2022-11-25 18:01:13,017 INFO L226 Difference]: Without dead ends: 151 [2022-11-25 18:01:13,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 391 SyntacticMatches, 20 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=710, Invalid=3450, Unknown=0, NotChecked=0, Total=4160 [2022-11-25 18:01:13,020 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 54 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:13,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 264 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 18:01:13,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-25 18:01:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 138. [2022-11-25 18:01:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 92 states have internal predecessors, (99), 22 states have call successors, (22), 9 states have call predecessors, (22), 24 states have return successors, (121), 36 states have call predecessors, (121), 22 states have call successors, (121) [2022-11-25 18:01:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 242 transitions. [2022-11-25 18:01:13,039 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 242 transitions. Word has length 183 [2022-11-25 18:01:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:13,040 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 242 transitions. [2022-11-25 18:01:13,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (9), 1 states have call predecessors, (9), 15 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-25 18:01:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 242 transitions. [2022-11-25 18:01:13,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-25 18:01:13,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:13,043 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:01:13,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:01:13,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:01:13,250 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:13,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:13,251 INFO L85 PathProgramCache]: Analyzing trace with hash -860565711, now seen corresponding path program 8 times [2022-11-25 18:01:13,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:13,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274908570] [2022-11-25 18:01:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:13,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 18:01:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:01:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 18:01:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:01:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:01:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:01:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 18:01:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:01:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 18:01:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 18:01:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 18:01:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 18:01:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2022-11-25 18:01:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:01:14,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274908570] [2022-11-25 18:01:14,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274908570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:01:14,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988915833] [2022-11-25 18:01:14,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:01:14,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:01:14,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:01:14,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:01:14,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:01:15,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:01:15,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:01:15,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-25 18:01:15,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:01:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2022-11-25 18:01:15,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:01:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-25 18:01:20,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988915833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:01:20,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:01:20,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2022-11-25 18:01:20,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477158036] [2022-11-25 18:01:20,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:01:20,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 18:01:20,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:20,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 18:01:20,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2022-11-25 18:01:20,070 INFO L87 Difference]: Start difference. First operand 138 states and 242 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2022-11-25 18:01:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:21,002 INFO L93 Difference]: Finished difference Result 255 states and 507 transitions. [2022-11-25 18:01:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-25 18:01:21,007 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) Word has length 170 [2022-11-25 18:01:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:21,010 INFO L225 Difference]: With dead ends: 255 [2022-11-25 18:01:21,010 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 18:01:21,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 358 SyntacticMatches, 23 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=865, Invalid=3295, Unknown=0, NotChecked=0, Total=4160 [2022-11-25 18:01:21,015 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:21,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 213 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:01:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 18:01:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 18:01:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:01:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 18:01:21,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2022-11-25 18:01:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:21,019 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 18:01:21,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2022-11-25 18:01:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 18:01:21,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 18:01:21,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 18:01:21,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:01:21,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:01:21,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 18:01:22,738 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 18:01:22,738 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-25 18:01:22,738 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 18:01:22,738 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 33) no Hoare annotation was computed. [2022-11-25 18:01:22,738 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-25 18:01:22,738 INFO L902 garLoopResultBuilder]: At program point L27(lines 27 47) the Hoare annotation is: true [2022-11-25 18:01:22,739 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2022-11-25 18:01:22,739 INFO L899 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2022-11-25 18:01:22,739 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2022-11-25 18:01:22,739 INFO L902 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: true [2022-11-25 18:01:22,739 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2022-11-25 18:01:22,739 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 40) no Hoare annotation was computed. [2022-11-25 18:01:22,739 INFO L899 garLoopResultBuilder]: For program point ackermannEXIT(lines 16 24) no Hoare annotation was computed. [2022-11-25 18:01:22,740 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (or (not (= |ackermann_#in~m| 0)) (not (< |ackermann_#in~n| 2))) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2022-11-25 18:01:22,740 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-11-25 18:01:22,740 INFO L902 garLoopResultBuilder]: At program point ackermannENTRY(lines 16 24) the Hoare annotation is: true [2022-11-25 18:01:22,740 INFO L895 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2022-11-25 18:01:22,740 INFO L895 garLoopResultBuilder]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse5 (<= 5 |ackermann_#t~ret5|)) (.cse0 (= ackermann_~n |ackermann_#in~n|)) (.cse4 (<= 1 |ackermann_#in~m|)) (.cse2 (<= |ackermann_#in~m| 1)) (.cse3 (<= |ackermann_#in~n| 1)) (.cse6 (<= 6 |ackermann_#t~ret5|)) (.cse1 (= ackermann_~m |ackermann_#in~m|)) (.cse8 (= |ackermann_#in~m| 0))) (and (or (and .cse0 (<= 2 |ackermann_#t~ret5|) .cse1 .cse2 .cse3) (and (<= |ackermann_#in~n| 3) .cse0 .cse1 .cse2 (<= 4 |ackermann_#t~ret5|)) (not .cse4) (and .cse5 .cse0 .cse1 (<= |ackermann_#in~n| 4) .cse2) (and (<= |ackermann_#in~n| 2) (<= 3 |ackermann_#t~ret5|) .cse0 .cse1) (and .cse6 .cse0 .cse1)) (let ((.cse7 (<= 2 ackermann_~m))) (or (and .cse5 .cse7 (<= ackermann_~m 2) .cse1) (and .cse8 .cse0 .cse1) (and .cse4 .cse2) (and .cse7 .cse1 .cse3) (and .cse6 .cse7 .cse1))) (or .cse8 (not (<= |ackermann_#in~n| 0))))) [2022-11-25 18:01:22,741 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2022-11-25 18:01:22,741 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-11-25 18:01:22,741 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-11-25 18:01:22,741 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed. [2022-11-25 18:01:22,741 INFO L899 garLoopResultBuilder]: For program point ackermannFINAL(lines 16 24) no Hoare annotation was computed. [2022-11-25 18:01:22,745 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2022-11-25 18:01:22,748 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:01:22,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:01:22 BoogieIcfgContainer [2022-11-25 18:01:22,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:01:22,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:01:22,761 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:01:22,761 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:01:22,762 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:37" (3/4) ... [2022-11-25 18:01:22,766 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:01:22,779 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2022-11-25 18:01:22,793 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-25 18:01:22,803 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-25 18:01:22,803 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 18:01:22,803 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:01:22,866 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:01:22,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:01:22,867 INFO L158 Benchmark]: Toolchain (without parser) took 45770.38ms. Allocated memory was 157.3MB in the beginning and 474.0MB in the end (delta: 316.7MB). Free memory was 126.2MB in the beginning and 172.8MB in the end (delta: -46.6MB). Peak memory consumption was 270.7MB. Max. memory is 16.1GB. [2022-11-25 18:01:22,867 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:01:22,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.14ms. Allocated memory is still 157.3MB. Free memory was 126.2MB in the beginning and 126.6MB in the end (delta: -342.2kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:01:22,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.71ms. Allocated memory is still 157.3MB. Free memory was 126.6MB in the beginning and 124.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:01:22,868 INFO L158 Benchmark]: Boogie Preprocessor took 30.15ms. Allocated memory is still 157.3MB. Free memory was 124.7MB in the beginning and 123.9MB in the end (delta: 799.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:01:22,869 INFO L158 Benchmark]: RCFGBuilder took 269.28ms. Allocated memory is still 157.3MB. Free memory was 123.9MB in the beginning and 112.9MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 18:01:22,870 INFO L158 Benchmark]: TraceAbstraction took 44991.23ms. Allocated memory was 157.3MB in the beginning and 474.0MB in the end (delta: 316.7MB). Free memory was 112.1MB in the beginning and 174.9MB in the end (delta: -62.8MB). Peak memory consumption was 255.7MB. Max. memory is 16.1GB. [2022-11-25 18:01:22,870 INFO L158 Benchmark]: Witness Printer took 105.41ms. Allocated memory is still 474.0MB. Free memory was 174.9MB in the beginning and 172.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:01:22,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.14ms. Allocated memory is still 157.3MB. Free memory was 126.2MB in the beginning and 126.6MB in the end (delta: -342.2kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.71ms. Allocated memory is still 157.3MB. Free memory was 126.6MB in the beginning and 124.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.15ms. Allocated memory is still 157.3MB. Free memory was 124.7MB in the beginning and 123.9MB in the end (delta: 799.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 269.28ms. Allocated memory is still 157.3MB. Free memory was 123.9MB in the beginning and 112.9MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 44991.23ms. Allocated memory was 157.3MB in the beginning and 474.0MB in the end (delta: 316.7MB). Free memory was 112.1MB in the beginning and 174.9MB in the end (delta: -62.8MB). Peak memory consumption was 255.7MB. Max. memory is 16.1GB. * Witness Printer took 105.41ms. Allocated memory is still 474.0MB. Free memory was 174.9MB in the beginning and 172.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.9s, OverallIterations: 10, TraceHistogramMax: 31, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 470 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 421 mSDsluCounter, 1660 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1414 mSDsCounter, 667 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3413 IncrementalHoareTripleChecker+Invalid, 4080 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 667 mSolverCounterUnsat, 246 mSDtfsCounter, 3413 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2906 GetRequests, 2449 SyntacticMatches, 97 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4380 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=9, InterpolantAutomatonStates: 204, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 502 PreInvPairs, 1035 NumberOfFragments, 165 HoareAnnotationTreeSize, 502 FomulaSimplifications, 3107 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 6 FomulaSimplificationsInter, 3481 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 33.7s InterpolantComputationTime, 2288 NumberOfCodeBlocks, 2120 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 3398 ConstructedInterpolants, 0 QuantifiedInterpolants, 6476 SizeOfPredicates, 59 NumberOfNonLiveVariables, 3025 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 28 InterpolantComputations, 1 PerfectInterpolantSequences, 22532/27060 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-25 18:01:22,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14c0efd-b650-4339-88fd-6d44b347cc6a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE