./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:27:45,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:27:45,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:27:45,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:27:45,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:27:45,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:27:45,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:27:45,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:27:45,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:27:45,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:27:45,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:27:45,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:27:45,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:27:45,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:27:45,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:27:45,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:27:45,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:27:45,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:27:45,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:27:45,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:27:45,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:27:45,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:27:45,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:27:45,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:27:45,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:27:45,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:27:45,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:27:45,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:27:45,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:27:45,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:27:45,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:27:45,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:27:45,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:27:45,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:27:45,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:27:45,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:27:45,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:27:45,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:27:45,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:27:45,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:27:45,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:27:45,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:27:45,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:27:45,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:27:45,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:27:45,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:27:45,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:27:45,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:27:45,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:27:45,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:27:45,407 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:27:45,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:27:45,408 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:27:45,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:27:45,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:27:45,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:27:45,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:27:45,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:27:45,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:27:45,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:27:45,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:27:45,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:27:45,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:27:45,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:27:45,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:27:45,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:27:45,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:27:45,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:27:45,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:27:45,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:27:45,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:27:45,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:27:45,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:27:45,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:27:45,411 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:27:45,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:27:45,411 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:27:45,411 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_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 [2022-12-13 22:27:45,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:27:45,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:27:45,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:27:45,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:27:45,600 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:27:45,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-pthread/cs_stack-1.i [2022-12-13 22:27:48,276 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:27:48,460 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:27:48,461 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/sv-benchmarks/c/seq-pthread/cs_stack-1.i [2022-12-13 22:27:48,471 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/data/29974a43d/fe23fccb493e42f187fdee84d4404e60/FLAG3bab729f1 [2022-12-13 22:27:48,482 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/data/29974a43d/fe23fccb493e42f187fdee84d4404e60 [2022-12-13 22:27:48,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:27:48,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:27:48,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:27:48,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:27:48,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:27:48,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:48,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6576869f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48, skipping insertion in model container [2022-12-13 22:27:48,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:48,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:27:48,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:27:48,797 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_29753531-cdc4-4bda-98c1-7f9fe31162f4/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2022-12-13 22:27:48,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:27:48,871 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:27:48,892 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_29753531-cdc4-4bda-98c1-7f9fe31162f4/sv-benchmarks/c/seq-pthread/cs_stack-1.i[34744,34757] [2022-12-13 22:27:48,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:27:48,975 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:27:48,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48 WrapperNode [2022-12-13 22:27:48,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:27:48,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:27:48,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:27:48,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:27:48,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:48,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,026 INFO L138 Inliner]: procedures = 254, calls = 274, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 638 [2022-12-13 22:27:49,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:27:49,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:27:49,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:27:49,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:27:49,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,061 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:27:49,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:27:49,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:27:49,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:27:49,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (1/1) ... [2022-12-13 22:27:49,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:27:49,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:27:49,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:27:49,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:27:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 22:27:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 22:27:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:27:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-12-13 22:27:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-12-13 22:27:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 22:27:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:27:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 22:27:49,129 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-12-13 22:27:49,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-12-13 22:27:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:27:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:27:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2022-12-13 22:27:49,130 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2022-12-13 22:27:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:27:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 22:27:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-12-13 22:27:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-12-13 22:27:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-12-13 22:27:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-12-13 22:27:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-12-13 22:27:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-12-13 22:27:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-12-13 22:27:49,132 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-12-13 22:27:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-12-13 22:27:49,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-12-13 22:27:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:27:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:27:49,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:27:49,280 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:27:49,281 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:27:49,312 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:49,312 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2022-12-13 22:27:49,333 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:49,333 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2022-12-13 22:27:49,333 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2022-12-13 22:27:49,334 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:49,334 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:49,334 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L933: SUMMARY for call __CS_cs(); srcloc: null [2022-12-13 22:27:49,334 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume 0 != ~__CS_ret~0 % 256; [2022-12-13 22:27:49,334 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:49,334 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2022-12-13 22:27:49,613 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:49,613 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-12-13 22:27:49,613 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:49,613 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-12-13 22:27:49,613 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:49,613 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-12-13 22:27:49,613 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:49,614 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-12-13 22:27:49,614 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-12-13 22:27:49,614 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2022-12-13 22:27:49,614 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: SUMMARY for call __CS_cs(); srcloc: null [2022-12-13 22:27:49,614 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-12-13 22:27:49,614 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2022-12-13 22:27:51,862 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:27:51,868 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:27:51,868 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 22:27:51,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:27:51 BoogieIcfgContainer [2022-12-13 22:27:51,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:27:51,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:27:51,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:27:51,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:27:51,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:27:48" (1/3) ... [2022-12-13 22:27:51,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd8ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:27:51, skipping insertion in model container [2022-12-13 22:27:51,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:27:48" (2/3) ... [2022-12-13 22:27:51,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd8ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:27:51, skipping insertion in model container [2022-12-13 22:27:51,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:27:51" (3/3) ... [2022-12-13 22:27:51,875 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stack-1.i [2022-12-13 22:27:51,889 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:27:51,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:27:51,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:27:51,945 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;@6363c141, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:27:51,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 22:27:51,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 140 states have (on average 1.5285714285714285) internal successors, (214), 143 states have internal predecessors, (214), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-13 22:27:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 22:27:51,969 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:27:51,970 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:27:51,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:27:51,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:27:51,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1265566629, now seen corresponding path program 1 times [2022-12-13 22:27:51,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:27:51,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839410120] [2022-12-13 22:27:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:27:51,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:27:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 22:27:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 22:27:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 22:27:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 22:27:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 22:27:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 22:27:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 22:27:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 22:27:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 22:27:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 22:27:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:27:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 22:27:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 22:27:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 22:27:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:27:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 22:27:58,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:27:58,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839410120] [2022-12-13 22:27:58,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839410120] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:27:58,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:27:58,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:27:58,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879569569] [2022-12-13 22:27:58,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:27:58,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:27:58,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:27:58,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:27:58,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:27:58,044 INFO L87 Difference]: Start difference. First operand has 224 states, 140 states have (on average 1.5285714285714285) internal successors, (214), 143 states have internal predecessors, (214), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 22:27:58,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:27:58,119 INFO L93 Difference]: Finished difference Result 453 states and 798 transitions. [2022-12-13 22:27:58,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:27:58,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2022-12-13 22:27:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:27:58,128 INFO L225 Difference]: With dead ends: 453 [2022-12-13 22:27:58,129 INFO L226 Difference]: Without dead ends: 227 [2022-12-13 22:27:58,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:27:58,135 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 8 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:27:58,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 696 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:27:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-13 22:27:58,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 221. [2022-12-13 22:27:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 138 states have (on average 1.4782608695652173) internal successors, (204), 140 states have internal predecessors, (204), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-13 22:27:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 350 transitions. [2022-12-13 22:27:58,177 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 350 transitions. Word has length 96 [2022-12-13 22:27:58,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:27:58,177 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 350 transitions. [2022-12-13 22:27:58,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 22:27:58,178 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 350 transitions. [2022-12-13 22:27:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 22:27:58,181 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:27:58,181 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:27:58,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:27:58,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:27:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:27:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash -987018820, now seen corresponding path program 1 times [2022-12-13 22:27:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:27:58,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102605377] [2022-12-13 22:27:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:27:58,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:27:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 22:28:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 22:28:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 22:28:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 22:28:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 22:28:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 22:28:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:28:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 22:28:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:28:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 22:28:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 22:28:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 22:28:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 22:28:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 22:28:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 22:28:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:03,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102605377] [2022-12-13 22:28:03,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102605377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:28:03,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:28:03,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:28:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416881748] [2022-12-13 22:28:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:28:03,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:28:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:03,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:28:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:03,690 INFO L87 Difference]: Start difference. First operand 221 states and 350 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 22:28:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:03,746 INFO L93 Difference]: Finished difference Result 443 states and 703 transitions. [2022-12-13 22:28:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:28:03,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 101 [2022-12-13 22:28:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:03,750 INFO L225 Difference]: With dead ends: 443 [2022-12-13 22:28:03,750 INFO L226 Difference]: Without dead ends: 225 [2022-12-13 22:28:03,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:28:03,754 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 2 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:03,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 685 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-12-13 22:28:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2022-12-13 22:28:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 140 states have (on average 1.4714285714285715) internal successors, (206), 142 states have internal predecessors, (206), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-13 22:28:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 352 transitions. [2022-12-13 22:28:03,778 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 352 transitions. Word has length 101 [2022-12-13 22:28:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:03,778 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 352 transitions. [2022-12-13 22:28:03,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 22:28:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 352 transitions. [2022-12-13 22:28:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 22:28:03,783 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:03,784 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:28:03,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:28:03,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:28:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:03,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2109218368, now seen corresponding path program 1 times [2022-12-13 22:28:03,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:03,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952972174] [2022-12-13 22:28:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 22:28:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:28:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 22:28:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 22:28:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 22:28:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 22:28:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 22:28:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 22:28:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 22:28:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 22:28:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:28:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 22:28:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 22:28:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 22:28:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-12-13 22:28:10,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:10,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952972174] [2022-12-13 22:28:10,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952972174] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:28:10,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279470582] [2022-12-13 22:28:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:10,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:28:10,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:28:10,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:28:10,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:28:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:14,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 16931 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:28:14,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:28:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-12-13 22:28:14,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:28:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-12-13 22:28:14,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279470582] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:28:14,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:28:14,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-12-13 22:28:14,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497271881] [2022-12-13 22:28:14,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:28:14,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:28:14,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:28:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:28:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:28:14,897 INFO L87 Difference]: Start difference. First operand 223 states and 352 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-12-13 22:28:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:28:14,974 INFO L93 Difference]: Finished difference Result 452 states and 714 transitions. [2022-12-13 22:28:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:28:14,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 105 [2022-12-13 22:28:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:28:14,978 INFO L225 Difference]: With dead ends: 452 [2022-12-13 22:28:14,978 INFO L226 Difference]: Without dead ends: 232 [2022-12-13 22:28:14,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:28:14,980 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 4 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:28:14,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1365 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:28:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-12-13 22:28:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 231. [2022-12-13 22:28:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 148 states have (on average 1.445945945945946) internal successors, (214), 150 states have internal predecessors, (214), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-13 22:28:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 360 transitions. [2022-12-13 22:28:15,005 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 360 transitions. Word has length 105 [2022-12-13 22:28:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:28:15,005 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 360 transitions. [2022-12-13 22:28:15,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-12-13 22:28:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 360 transitions. [2022-12-13 22:28:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 22:28:15,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:28:15,010 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:28:15,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:28:15,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:28:15,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:28:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:28:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1563796536, now seen corresponding path program 2 times [2022-12-13 22:28:15,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:28:15,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169672755] [2022-12-13 22:28:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:28:15,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:28:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 22:28:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 22:28:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 22:28:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 22:28:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:28:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 22:28:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:28:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 22:28:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 22:28:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 22:28:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 22:28:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 22:28:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 22:28:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 22:28:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:28:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-12-13 22:28:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:28:23,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169672755] [2022-12-13 22:28:23,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169672755] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:28:23,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28937070] [2022-12-13 22:28:23,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:28:23,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:28:23,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:28:23,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:28:23,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:29:25,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:29:25,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:29:25,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 16649 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 22:29:25,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:29:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-12-13 22:29:25,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:29:25,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28937070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:29:25,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:29:25,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 22:29:25,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423665362] [2022-12-13 22:29:25,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:29:25,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:29:25,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:29:25,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:29:25,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:29:25,307 INFO L87 Difference]: Start difference. First operand 231 states and 360 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 22:29:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:29:25,349 INFO L93 Difference]: Finished difference Result 439 states and 701 transitions. [2022-12-13 22:29:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:29:25,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2022-12-13 22:29:25,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:29:25,355 INFO L225 Difference]: With dead ends: 439 [2022-12-13 22:29:25,355 INFO L226 Difference]: Without dead ends: 405 [2022-12-13 22:29:25,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:29:25,357 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 280 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:29:25,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1219 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:29:25,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-12-13 22:29:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 404. [2022-12-13 22:29:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 254 states have (on average 1.4960629921259843) internal successors, (380), 258 states have internal predecessors, (380), 131 states have call successors, (131), 18 states have call predecessors, (131), 18 states have return successors, (139), 131 states have call predecessors, (139), 131 states have call successors, (139) [2022-12-13 22:29:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 650 transitions. [2022-12-13 22:29:25,397 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 650 transitions. Word has length 113 [2022-12-13 22:29:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:29:25,397 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 650 transitions. [2022-12-13 22:29:25,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 22:29:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 650 transitions. [2022-12-13 22:29:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-12-13 22:29:25,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:29:25,404 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:29:25,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 22:29:25,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:29:25,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:29:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:29:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1785513067, now seen corresponding path program 1 times [2022-12-13 22:29:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:29:25,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230758513] [2022-12-13 22:29:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:29:25,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:29:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 22:29:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:29:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:29:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 22:29:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:29:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 22:29:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:29:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:29:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 22:29:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:29:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 22:29:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 22:29:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:29:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 22:29:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 22:29:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 22:29:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 22:29:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 22:29:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 22:29:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 22:29:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 22:29:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 22:29:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 22:29:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 22:29:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 22:29:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-12-13 22:29:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-12-13 22:29:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2022-12-13 22:29:33,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:29:33,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230758513] [2022-12-13 22:29:33,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230758513] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:29:33,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468030440] [2022-12-13 22:29:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:29:33,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:29:33,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:29:33,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:29:33,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:29:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:29:38,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 17324 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:29:38,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:29:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-12-13 22:29:38,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:29:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-12-13 22:29:38,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468030440] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:29:38,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:29:38,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2022-12-13 22:29:38,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537644500] [2022-12-13 22:29:38,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:29:38,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 22:29:38,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:29:38,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 22:29:38,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:29:38,779 INFO L87 Difference]: Start difference. First operand 404 states and 650 transitions. Second operand has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 9 states have internal predecessors, (114), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-12-13 22:29:40,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:29:42,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:29:44,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:29:46,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:29:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:29:47,633 INFO L93 Difference]: Finished difference Result 840 states and 1344 transitions. [2022-12-13 22:29:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 22:29:47,634 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 9 states have internal predecessors, (114), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 192 [2022-12-13 22:29:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:29:47,637 INFO L225 Difference]: With dead ends: 840 [2022-12-13 22:29:47,638 INFO L226 Difference]: Without dead ends: 439 [2022-12-13 22:29:47,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 434 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2022-12-13 22:29:47,641 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 109 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 241 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-12-13 22:29:47,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1774 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 787 Invalid, 4 Unknown, 0 Unchecked, 8.7s Time] [2022-12-13 22:29:47,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-12-13 22:29:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 433. [2022-12-13 22:29:47,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 281 states have (on average 1.4555160142348755) internal successors, (409), 287 states have internal predecessors, (409), 131 states have call successors, (131), 18 states have call predecessors, (131), 20 states have return successors, (143), 131 states have call predecessors, (143), 131 states have call successors, (143) [2022-12-13 22:29:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 683 transitions. [2022-12-13 22:29:47,677 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 683 transitions. Word has length 192 [2022-12-13 22:29:47,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:29:47,677 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 683 transitions. [2022-12-13 22:29:47,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 9 states have internal predecessors, (114), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-12-13 22:29:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 683 transitions. [2022-12-13 22:29:47,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-12-13 22:29:47,683 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:29:47,683 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:29:47,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:29:47,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:29:47,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:29:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:29:47,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1135590444, now seen corresponding path program 2 times [2022-12-13 22:29:47,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:29:47,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827252970] [2022-12-13 22:29:47,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:29:47,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:29:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 22:30:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:30:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 22:30:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 22:30:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:30:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 22:30:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 22:30:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 22:30:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:30:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 22:30:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 22:30:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 22:30:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 22:30:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 22:30:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 22:30:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 22:30:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 22:30:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-12-13 22:30:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 22:30:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-12-13 22:30:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-12-13 22:30:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-12-13 22:30:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2022-12-13 22:30:12,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:12,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827252970] [2022-12-13 22:30:12,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827252970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:30:12,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:30:12,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:30:12,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966782173] [2022-12-13 22:30:12,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:30:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:30:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:30:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:30:12,570 INFO L87 Difference]: Start difference. First operand 433 states and 683 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-12-13 22:30:14,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:30:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:15,825 INFO L93 Difference]: Finished difference Result 880 states and 1410 transitions. [2022-12-13 22:30:15,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:30:15,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 217 [2022-12-13 22:30:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:15,832 INFO L225 Difference]: With dead ends: 880 [2022-12-13 22:30:15,832 INFO L226 Difference]: Without dead ends: 842 [2022-12-13 22:30:15,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:30:15,834 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 429 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 193 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:15,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1337 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 999 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 22:30:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-12-13 22:30:15,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 823. [2022-12-13 22:30:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 518 states have (on average 1.4826254826254825) internal successors, (768), 533 states have internal predecessors, (768), 261 states have call successors, (261), 36 states have call predecessors, (261), 43 states have return successors, (301), 261 states have call predecessors, (301), 261 states have call successors, (301) [2022-12-13 22:30:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1330 transitions. [2022-12-13 22:30:15,909 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1330 transitions. Word has length 217 [2022-12-13 22:30:15,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:15,910 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1330 transitions. [2022-12-13 22:30:15,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-12-13 22:30:15,910 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1330 transitions. [2022-12-13 22:30:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-12-13 22:30:15,930 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:15,930 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:30:15,931 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1055093672, now seen corresponding path program 1 times [2022-12-13 22:30:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:15,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163755009] [2022-12-13 22:30:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 22:30:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:30:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 22:30:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:30:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 22:30:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:30:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 22:30:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 22:30:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:30:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:30:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 22:30:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 22:30:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 22:30:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 22:30:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 22:30:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 22:30:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 22:30:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-12-13 22:30:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 22:30:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 22:30:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-12-13 22:30:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-12-13 22:30:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 22:30:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-12-13 22:30:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:30:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 897 trivial. 0 not checked. [2022-12-13 22:30:41,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:30:41,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163755009] [2022-12-13 22:30:41,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163755009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:30:41,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:30:41,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:30:41,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538303683] [2022-12-13 22:30:41,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:30:41,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:30:41,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:30:41,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:30:41,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:30:41,244 INFO L87 Difference]: Start difference. First operand 823 states and 1330 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-12-13 22:30:43,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:30:44,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:30:44,872 INFO L93 Difference]: Finished difference Result 1925 states and 3202 transitions. [2022-12-13 22:30:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 22:30:44,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 221 [2022-12-13 22:30:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:30:44,878 INFO L225 Difference]: With dead ends: 1925 [2022-12-13 22:30:44,878 INFO L226 Difference]: Without dead ends: 1149 [2022-12-13 22:30:44,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-12-13 22:30:44,882 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 746 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 611 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 22:30:44,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1163 Invalid, 2194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 1582 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 22:30:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-12-13 22:30:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 894. [2022-12-13 22:30:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 560 states have (on average 1.4946428571428572) internal successors, (837), 580 states have internal predecessors, (837), 288 states have call successors, (288), 35 states have call predecessors, (288), 45 states have return successors, (330), 288 states have call predecessors, (330), 288 states have call successors, (330) [2022-12-13 22:30:44,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1455 transitions. [2022-12-13 22:30:44,938 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1455 transitions. Word has length 221 [2022-12-13 22:30:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:30:44,938 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1455 transitions. [2022-12-13 22:30:44,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-12-13 22:30:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1455 transitions. [2022-12-13 22:30:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-12-13 22:30:44,943 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:30:44,943 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:30:44,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:30:44,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:30:44,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:30:44,944 INFO L85 PathProgramCache]: Analyzing trace with hash 188036138, now seen corresponding path program 1 times [2022-12-13 22:30:44,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:30:44,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752375005] [2022-12-13 22:30:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:30:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:30:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:31:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 22:31:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 22:31:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 22:31:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 22:31:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 22:31:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 22:31:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 22:31:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 22:31:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 22:31:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 22:31:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 22:31:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 22:31:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 22:31:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 22:31:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 22:31:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 22:31:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-12-13 22:31:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 22:31:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-12-13 22:31:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-12-13 22:31:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-12-13 22:31:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2022-12-13 22:31:02,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:31:02,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752375005] [2022-12-13 22:31:02,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752375005] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:31:02,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:31:02,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:31:02,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493409367] [2022-12-13 22:31:02,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:31:02,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:31:02,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:31:02,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:31:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:31:02,685 INFO L87 Difference]: Start difference. First operand 894 states and 1455 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-12-13 22:31:04,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:06,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:08,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 22:31:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:31:09,691 INFO L93 Difference]: Finished difference Result 1367 states and 2185 transitions. [2022-12-13 22:31:09,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:31:09,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 217 [2022-12-13 22:31:09,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:31:09,695 INFO L225 Difference]: With dead ends: 1367 [2022-12-13 22:31:09,695 INFO L226 Difference]: Without dead ends: 826 [2022-12-13 22:31:09,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:31:09,698 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 473 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 410 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-13 22:31:09,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 1362 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1028 Invalid, 3 Unknown, 0 Unchecked, 6.9s Time] [2022-12-13 22:31:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-12-13 22:31:09,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 716. [2022-12-13 22:31:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 458 states have (on average 1.4410480349344978) internal successors, (660), 471 states have internal predecessors, (660), 214 states have call successors, (214), 35 states have call predecessors, (214), 43 states have return successors, (244), 215 states have call predecessors, (244), 214 states have call successors, (244) [2022-12-13 22:31:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1118 transitions. [2022-12-13 22:31:09,742 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1118 transitions. Word has length 217 [2022-12-13 22:31:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:31:09,743 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1118 transitions. [2022-12-13 22:31:09,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-12-13 22:31:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1118 transitions. [2022-12-13 22:31:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-12-13 22:31:09,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:31:09,747 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:31:09,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:31:09,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:31:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:31:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash 642681938, now seen corresponding path program 1 times [2022-12-13 22:31:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:31:09,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077538109] [2022-12-13 22:31:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:31:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:31:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:31:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:31:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 22:31:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 22:31:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 22:31:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:31:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 22:31:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 22:31:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 22:31:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:31:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 22:31:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 22:31:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 22:31:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 22:31:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 22:31:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 22:31:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 22:31:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-12-13 22:31:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 22:31:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 22:31:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-12-13 22:31:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-12-13 22:31:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 22:31:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-12-13 22:31:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2022-12-13 22:31:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:31:32,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077538109] [2022-12-13 22:31:32,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077538109] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:31:32,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936665325] [2022-12-13 22:31:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:31:32,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:31:32,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:31:32,766 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:31:32,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29753531-cdc4-4bda-98c1-7f9fe31162f4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:31:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:31:52,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 17729 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 22:31:52,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:31:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:31:52,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:31:52,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:31:59,183 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 307 DAG size of output: 95 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 22:31:59,184 INFO L321 Elim1Store]: treesize reduction 1470, result has 21.0 percent of original size [2022-12-13 22:31:59,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 4742 treesize of output 2865 [2022-12-13 22:31:59,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 22:31:59,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 22:31:59,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 22:32:00,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 22:32:00,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 22:32:53,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:53,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:53,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:53,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:53,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:53,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:53,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:53,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 22:32:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:57,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:57,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:57,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:32:57,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 22:32:57,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 22:32:57,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 22:32:57,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 22:32:58,192 INFO L321 Elim1Store]: treesize reduction 364, result has 10.1 percent of original size [2022-12-13 22:32:58,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 133378612 treesize of output 133377855