./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/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_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/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_8c6eb377-be9b-48b1-a423-c47c6b509530/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 81b1f0d7bc9c0822a8207cacf976d5f28113ec35347c6e8d0beebb39e2d17414 --- 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 14:54:36,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:54:36,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:54:36,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:54:36,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:54:36,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:54:36,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:54:36,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:54:36,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:54:36,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:54:36,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:54:36,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:54:36,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:54:36,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:54:36,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:54:36,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:54:36,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:54:36,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:54:36,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:54:36,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:54:36,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:54:36,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:54:36,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:54:36,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:54:36,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:54:36,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:54:36,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:54:36,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:54:36,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:54:36,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:54:36,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:54:36,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:54:36,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:54:36,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:54:36,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:54:36,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:54:36,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:54:36,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:54:36,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:54:36,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:54:36,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:54:36,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:54:36,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:54:36,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:54:36,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:54:36,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:54:36,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:54:36,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:54:36,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:54:36,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:54:36,372 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:54:36,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:54:36,373 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:54:36,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:54:36,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:54:36,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:54:36,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:54:36,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:54:36,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:54:36,374 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:54:36,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:54:36,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:54:36,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:54:36,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:54:36,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:54:36,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:54:36,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:54:36,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:54:36,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:54:36,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:54:36,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:54:36,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:54:36,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:54:36,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:54:36,377 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:54:36,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:54:36,377 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:54:36,377 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_8c6eb377-be9b-48b1-a423-c47c6b509530/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81b1f0d7bc9c0822a8207cacf976d5f28113ec35347c6e8d0beebb39e2d17414 [2022-12-13 14:54:36,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:54:36,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:54:36,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:54:36,574 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:54:36,574 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:54:36,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c [2022-12-13 14:54:39,123 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:54:39,659 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:54:39,659 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c [2022-12-13 14:54:39,689 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/data/60f913a55/44ab627d68e046ccbdf4ecb05acc0e89/FLAG3119e7198 [2022-12-13 14:54:40,206 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/data/60f913a55/44ab627d68e046ccbdf4ecb05acc0e89 [2022-12-13 14:54:40,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:54:40,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:54:40,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:54:40,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:54:40,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:54:40,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:54:40" (1/1) ... [2022-12-13 14:54:40,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ec93b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:40, skipping insertion in model container [2022-12-13 14:54:40,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:54:40" (1/1) ... [2022-12-13 14:54:40,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:54:40,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:54:41,777 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_8c6eb377-be9b-48b1-a423-c47c6b509530/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c[382357,382370] [2022-12-13 14:54:41,795 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_8c6eb377-be9b-48b1-a423-c47c6b509530/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c[383339,383352] [2022-12-13 14:54:41,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:54:41,932 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:54:42,768 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_8c6eb377-be9b-48b1-a423-c47c6b509530/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c[382357,382370] [2022-12-13 14:54:42,770 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_8c6eb377-be9b-48b1-a423-c47c6b509530/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c[383339,383352] [2022-12-13 14:54:42,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:54:42,817 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:54:42,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42 WrapperNode [2022-12-13 14:54:42,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:54:42,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:54:42,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:54:42,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:54:42,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:42,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,225 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-12-13 14:54:43,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:54:43,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:54:43,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:54:43,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:54:43,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,532 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:54:43,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:54:43,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:54:43,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:54:43,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (1/1) ... [2022-12-13 14:54:43,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:54:43,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:54:43,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:54:43,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:54:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:54:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-13 14:54:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-13 14:54:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 14:54:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 14:54:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-13 14:54:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-13 14:54:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-13 14:54:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-13 14:54:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-13 14:54:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-13 14:54:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-13 14:54:43,660 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-13 14:54:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:54:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:54:43,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:54:43,753 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:54:43,755 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:54:49,519 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:54:49,535 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:54:49,535 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 14:54:49,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:54:49 BoogieIcfgContainer [2022-12-13 14:54:49,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:54:49,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:54:49,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:54:49,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:54:49,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:54:40" (1/3) ... [2022-12-13 14:54:49,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129ed227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:54:49, skipping insertion in model container [2022-12-13 14:54:49,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:54:42" (2/3) ... [2022-12-13 14:54:49,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129ed227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:54:49, skipping insertion in model container [2022-12-13 14:54:49,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:54:49" (3/3) ... [2022-12-13 14:54:49,549 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.03.cil-2.c [2022-12-13 14:54:49,565 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:54:49,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 14:54:49,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:54:49,665 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;@596bba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:54:49,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 14:54:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 14:54:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 14:54:49,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:54:49,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:54:49,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:54:49,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:54:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-12-13 14:54:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:54:49,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914026160] [2022-12-13 14:54:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:54:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:54:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:54:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:50,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:54:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:50,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:54:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:54:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:54:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:54:50,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:54:50,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914026160] [2022-12-13 14:54:50,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914026160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:54:50,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:54:50,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:54:50,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035460855] [2022-12-13 14:54:50,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:54:50,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:54:50,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:54:50,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:54:50,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:54:50,137 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:51,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:54:51,171 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-12-13 14:54:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:54:51,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 14:54:51,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:54:51,195 INFO L225 Difference]: With dead ends: 4899 [2022-12-13 14:54:51,196 INFO L226 Difference]: Without dead ends: 2500 [2022-12-13 14:54:51,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:54:51,206 INFO L413 NwaCegarLoop]: 4179 mSDtfsCounter, 4551 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 16647 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:54:51,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4561 Valid, 16647 Invalid, 882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 14:54:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-12-13 14:54:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-12-13 14:54:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-12-13 14:54:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-12-13 14:54:51,332 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-12-13 14:54:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:54:51,332 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-12-13 14:54:51,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-12-13 14:54:51,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 14:54:51,336 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:54:51,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:54:51,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:54:51,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:54:51,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:54:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-12-13 14:54:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:54:51,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323860705] [2022-12-13 14:54:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:54:51,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:54:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:51,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:54:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:54:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:54:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:54:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:54:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:54:51,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:54:51,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323860705] [2022-12-13 14:54:51,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323860705] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:54:51,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:54:51,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:54:51,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078977017] [2022-12-13 14:54:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:54:51,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:54:51,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:54:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:54:51,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:54:51,552 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:54:52,570 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-12-13 14:54:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:54:52,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 14:54:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:54:52,582 INFO L225 Difference]: With dead ends: 2969 [2022-12-13 14:54:52,583 INFO L226 Difference]: Without dead ends: 2686 [2022-12-13 14:54:52,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:54:52,586 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4481 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4491 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:54:52,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4491 Valid, 20741 Invalid, 1269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 14:54:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-12-13 14:54:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-12-13 14:54:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-12-13 14:54:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-12-13 14:54:52,662 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-12-13 14:54:52,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:54:52,662 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-12-13 14:54:52,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-12-13 14:54:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 14:54:52,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:54:52,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:54:52,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:54:52,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:54:52,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:54:52,665 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-12-13 14:54:52,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:54:52,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719001728] [2022-12-13 14:54:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:54:52,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:54:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:54:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:54:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:52,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:54:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:54:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:52,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:54:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:54:52,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:54:52,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719001728] [2022-12-13 14:54:52,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719001728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:54:52,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:54:52,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:54:52,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852669249] [2022-12-13 14:54:52,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:54:52,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:54:52,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:54:52,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:54:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:54:52,801 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:54:53,787 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-12-13 14:54:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:54:53,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 14:54:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:54:53,802 INFO L225 Difference]: With dead ends: 3451 [2022-12-13 14:54:53,802 INFO L226 Difference]: Without dead ends: 3035 [2022-12-13 14:54:53,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:54:53,805 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4479 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:54:53,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 20739 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 14:54:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-12-13 14:54:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-12-13 14:54:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-12-13 14:54:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-12-13 14:54:53,919 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-12-13 14:54:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:54:53,920 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-12-13 14:54:53,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:53,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-12-13 14:54:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 14:54:53,923 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:54:53,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:54:53,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:54:53,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:54:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:54:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-12-13 14:54:53,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:54:53,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185865640] [2022-12-13 14:54:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:54:53,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:54:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:54:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:54,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:54:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:54:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:54:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:54,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:54:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:54:54,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:54:54,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185865640] [2022-12-13 14:54:54,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185865640] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:54:54,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:54:54,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:54:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869434567] [2022-12-13 14:54:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:54:54,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:54:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:54:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:54:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:54:54,082 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:54:55,057 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2022-12-13 14:54:55,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:54:55,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 14:54:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:54:55,069 INFO L225 Difference]: With dead ends: 4382 [2022-12-13 14:54:55,070 INFO L226 Difference]: Without dead ends: 3699 [2022-12-13 14:54:55,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:54:55,073 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4475 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:54:55,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4485 Valid, 20739 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 14:54:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-12-13 14:54:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2022-12-13 14:54:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-12-13 14:54:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2022-12-13 14:54:55,217 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2022-12-13 14:54:55,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:54:55,217 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2022-12-13 14:54:55,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2022-12-13 14:54:55,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 14:54:55,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:54:55,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:54:55,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:54:55,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:54:55,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:54:55,220 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2022-12-13 14:54:55,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:54:55,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444640172] [2022-12-13 14:54:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:54:55,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:54:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:54:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:54:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:54:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:54:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:54:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:55,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:54:55,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:54:55,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444640172] [2022-12-13 14:54:55,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444640172] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:54:55,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:54:55,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:54:55,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439249076] [2022-12-13 14:54:55,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:54:55,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:54:55,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:54:55,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:54:55,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:54:55,345 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:54:56,321 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2022-12-13 14:54:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 14:54:56,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 14:54:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:54:56,341 INFO L225 Difference]: With dead ends: 6651 [2022-12-13 14:54:56,341 INFO L226 Difference]: Without dead ends: 5433 [2022-12-13 14:54:56,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:54:56,347 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4606 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:54:56,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4620 Valid, 20729 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 14:54:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-12-13 14:54:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2022-12-13 14:54:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-12-13 14:54:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2022-12-13 14:54:56,502 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2022-12-13 14:54:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:54:56,502 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2022-12-13 14:54:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:56,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2022-12-13 14:54:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 14:54:56,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:54:56,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:54:56,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:54:56,504 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:54:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:54:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2022-12-13 14:54:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:54:56,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822277344] [2022-12-13 14:54:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:54:56,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:54:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:54:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:56,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:54:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:54:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:56,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:54:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:54:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:54:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:54:56,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822277344] [2022-12-13 14:54:56,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822277344] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:54:56,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:54:56,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:54:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632075974] [2022-12-13 14:54:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:54:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:54:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:54:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:54:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:54:56,596 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:54:57,913 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2022-12-13 14:54:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 14:54:57,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 14:54:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:54:57,938 INFO L225 Difference]: With dead ends: 10516 [2022-12-13 14:54:57,938 INFO L226 Difference]: Without dead ends: 8247 [2022-12-13 14:54:57,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:54:57,947 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 4495 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 20725 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:54:57,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 20725 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 14:54:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2022-12-13 14:54:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2022-12-13 14:54:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-12-13 14:54:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2022-12-13 14:54:58,201 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2022-12-13 14:54:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:54:58,202 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2022-12-13 14:54:58,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2022-12-13 14:54:58,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 14:54:58,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:54:58,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:54:58,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:54:58,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:54:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:54:58,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2022-12-13 14:54:58,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:54:58,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515932271] [2022-12-13 14:54:58,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:54:58,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:54:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:54:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:58,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:54:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:54:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:54:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:54:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:54:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:54:58,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:54:58,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515932271] [2022-12-13 14:54:58,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515932271] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:54:58,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:54:58,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:54:58,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021122029] [2022-12-13 14:54:58,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:54:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:54:58,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:54:58,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:54:58,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:54:58,304 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:54:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:54:59,599 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2022-12-13 14:54:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 14:54:59,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 14:54:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:54:59,631 INFO L225 Difference]: With dead ends: 17230 [2022-12-13 14:54:59,631 INFO L226 Difference]: Without dead ends: 12950 [2022-12-13 14:54:59,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:54:59,643 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4484 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:54:59,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 20729 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 14:54:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-12-13 14:55:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2022-12-13 14:55:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-12-13 14:55:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2022-12-13 14:55:00,134 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2022-12-13 14:55:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:55:00,134 INFO L495 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2022-12-13 14:55:00,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:55:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2022-12-13 14:55:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 14:55:00,144 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:55:00,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:55:00,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:55:00,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:55:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:55:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2022-12-13 14:55:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:55:00,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646570215] [2022-12-13 14:55:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:55:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:55:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:00,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:55:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:55:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:00,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:55:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:00,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:55:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:55:00,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:55:00,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646570215] [2022-12-13 14:55:00,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646570215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:55:00,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:55:00,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:55:00,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341928867] [2022-12-13 14:55:00,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:55:00,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:55:00,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:55:00,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:55:00,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:55:00,239 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:55:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:55:01,763 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2022-12-13 14:55:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:55:01,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-12-13 14:55:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:55:01,800 INFO L225 Difference]: With dead ends: 25979 [2022-12-13 14:55:01,800 INFO L226 Difference]: Without dead ends: 17584 [2022-12-13 14:55:01,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:55:01,818 INFO L413 NwaCegarLoop]: 4214 mSDtfsCounter, 4648 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:55:01,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 16542 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 14:55:01,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-12-13 14:55:02,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2022-12-13 14:55:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-12-13 14:55:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2022-12-13 14:55:02,459 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2022-12-13 14:55:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:55:02,460 INFO L495 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2022-12-13 14:55:02,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 14:55:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2022-12-13 14:55:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 14:55:02,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:55:02,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:55:02,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:55:02,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:55:02,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:55:02,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2022-12-13 14:55:02,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:55:02,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845270999] [2022-12-13 14:55:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:02,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:55:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:55:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:55:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:55:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:55:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:55:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:55:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:55:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 14:55:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:55:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:55:02,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845270999] [2022-12-13 14:55:02,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845270999] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:55:02,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086488051] [2022-12-13 14:55:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:02,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:55:02,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:55:02,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:55:02,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:55:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:02,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:55:02,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:55:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 14:55:02,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:55:02,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086488051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:55:02,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:55:02,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 14:55:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354331009] [2022-12-13 14:55:02,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:55:02,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:55:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:55:02,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:55:02,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:02,767 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:55:04,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:55:04,015 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2022-12-13 14:55:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:55:04,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-12-13 14:55:04,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:55:04,075 INFO L225 Difference]: With dead ends: 39550 [2022-12-13 14:55:04,075 INFO L226 Difference]: Without dead ends: 26962 [2022-12-13 14:55:04,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:04,111 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:55:04,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:55:04,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2022-12-13 14:55:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2022-12-13 14:55:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-12-13 14:55:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2022-12-13 14:55:05,416 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2022-12-13 14:55:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:55:05,416 INFO L495 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2022-12-13 14:55:05,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:55:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2022-12-13 14:55:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 14:55:05,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:55:05,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:55:05,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:55:05,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:55:05,647 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:55:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:55:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2022-12-13 14:55:05,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:55:05,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349451639] [2022-12-13 14:55:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:05,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:55:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:55:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:55:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:55:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:55:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:55:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:55:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:55:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 14:55:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:55:05,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:55:05,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349451639] [2022-12-13 14:55:05,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349451639] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:55:05,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692204067] [2022-12-13 14:55:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:05,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:55:05,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:55:05,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:55:05,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:55:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:05,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:55:05,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:55:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:55:05,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:55:05,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692204067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:55:05,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:55:05,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 14:55:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684777166] [2022-12-13 14:55:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:55:05,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:55:05,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:55:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:55:05,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:05,922 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:55:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:55:08,308 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2022-12-13 14:55:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:55:08,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-12-13 14:55:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:55:08,433 INFO L225 Difference]: With dead ends: 75333 [2022-12-13 14:55:08,433 INFO L226 Difference]: Without dead ends: 50702 [2022-12-13 14:55:08,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:08,476 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:55:08,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:55:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2022-12-13 14:55:10,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2022-12-13 14:55:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-12-13 14:55:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2022-12-13 14:55:11,132 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2022-12-13 14:55:11,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:55:11,133 INFO L495 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2022-12-13 14:55:11,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:55:11,133 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2022-12-13 14:55:11,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 14:55:11,215 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:55:11,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:55:11,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:55:11,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:55:11,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:55:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:55:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2022-12-13 14:55:11,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:55:11,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479092889] [2022-12-13 14:55:11,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:11,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:55:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:55:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:55:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:55:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:55:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:55:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:55:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:55:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 14:55:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:55:11,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:55:11,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479092889] [2022-12-13 14:55:11,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479092889] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:55:11,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486614263] [2022-12-13 14:55:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:11,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:55:11,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:55:11,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:55:11,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:55:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:11,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:55:11,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:55:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 14:55:11,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:55:11,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486614263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:55:11,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:55:11,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:55:11,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753524948] [2022-12-13 14:55:11,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:55:11,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:55:11,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:55:11,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:55:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:11,684 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 14:55:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:55:16,202 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2022-12-13 14:55:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:55:16,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-12-13 14:55:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:55:16,485 INFO L225 Difference]: With dead ends: 144685 [2022-12-13 14:55:16,486 INFO L226 Difference]: Without dead ends: 96511 [2022-12-13 14:55:16,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:16,571 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 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 14:55:16,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:55:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2022-12-13 14:55:21,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2022-12-13 14:55:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-12-13 14:55:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96511 states to 96511 states and 147320 transitions. [2022-12-13 14:55:21,872 INFO L78 Accepts]: Start accepts. Automaton has 96511 states and 147320 transitions. Word has length 128 [2022-12-13 14:55:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:55:21,872 INFO L495 AbstractCegarLoop]: Abstraction has 96511 states and 147320 transitions. [2022-12-13 14:55:21,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 14:55:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 96511 states and 147320 transitions. [2022-12-13 14:55:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 14:55:22,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:55:22,050 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:55:22,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 14:55:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:55:22,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:55:22,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:55:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1108291405, now seen corresponding path program 1 times [2022-12-13 14:55:22,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:55:22,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159006545] [2022-12-13 14:55:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:22,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:55:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:55:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:55:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:55:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:55:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:55:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:55:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:55:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 14:55:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:55:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 14:55:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 14:55:22,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:55:22,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159006545] [2022-12-13 14:55:22,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159006545] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:55:22,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468648329] [2022-12-13 14:55:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:22,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:55:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:55:22,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:55:22,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:55:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:22,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:55:22,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:55:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 14:55:22,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:55:22,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468648329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:55:22,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:55:22,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 14:55:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456074830] [2022-12-13 14:55:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:55:22,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:55:22,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:55:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:55:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:22,626 INFO L87 Difference]: Start difference. First operand 96511 states and 147320 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 14:55:32,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:55:32,616 INFO L93 Difference]: Finished difference Result 280463 states and 429619 transitions. [2022-12-13 14:55:32,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:55:32,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-12-13 14:55:32,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:55:33,241 INFO L225 Difference]: With dead ends: 280463 [2022-12-13 14:55:33,241 INFO L226 Difference]: Without dead ends: 186091 [2022-12-13 14:55:33,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:33,411 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 4086 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:55:33,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4399 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:55:33,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186091 states. [2022-12-13 14:55:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186091 to 184521. [2022-12-13 14:55:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184521 states, 159460 states have (on average 1.465803336259877) internal successors, (233737), 161263 states have internal predecessors, (233737), 14405 states have call successors, (14405), 9118 states have call predecessors, (14405), 10654 states have return successors, (32274), 14267 states have call predecessors, (32274), 14405 states have call successors, (32274) [2022-12-13 14:55:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184521 states to 184521 states and 280416 transitions. [2022-12-13 14:55:43,443 INFO L78 Accepts]: Start accepts. Automaton has 184521 states and 280416 transitions. Word has length 166 [2022-12-13 14:55:43,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:55:43,444 INFO L495 AbstractCegarLoop]: Abstraction has 184521 states and 280416 transitions. [2022-12-13 14:55:43,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 14:55:43,444 INFO L276 IsEmpty]: Start isEmpty. Operand 184521 states and 280416 transitions. [2022-12-13 14:55:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-13 14:55:44,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:55:44,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:55:44,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:55:44,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 14:55:44,223 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:55:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:55:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash 399987983, now seen corresponding path program 1 times [2022-12-13 14:55:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:55:44,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402707018] [2022-12-13 14:55:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:44,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:55:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:55:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:55:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:55:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:55:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:55:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 14:55:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 14:55:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:55:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 14:55:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:55:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 14:55:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 14:55:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:55:44,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402707018] [2022-12-13 14:55:44,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402707018] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:55:44,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963204779] [2022-12-13 14:55:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:55:44,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:55:44,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:55:44,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:55:44,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:55:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:55:44,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:55:44,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:55:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 14:55:44,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:55:44,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963204779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:55:44,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:55:44,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:55:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790758635] [2022-12-13 14:55:44,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:55:44,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:55:44,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:55:44,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:55:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:44,550 INFO L87 Difference]: Start difference. First operand 184521 states and 280416 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 14:55:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:55:52,917 INFO L93 Difference]: Finished difference Result 279321 states and 424803 transitions. [2022-12-13 14:55:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:55:52,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2022-12-13 14:55:52,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:55:53,345 INFO L225 Difference]: With dead ends: 279321 [2022-12-13 14:55:53,346 INFO L226 Difference]: Without dead ends: 155053 [2022-12-13 14:55:53,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:55:53,649 INFO L413 NwaCegarLoop]: 4178 mSDtfsCounter, 4108 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:55:53,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4222 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:55:53,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155053 states. [2022-12-13 14:56:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155053 to 109701. [2022-12-13 14:56:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109701 states, 95360 states have (on average 1.4197671979865771) internal successors, (135389), 96271 states have internal predecessors, (135389), 8073 states have call successors, (8073), 5498 states have call predecessors, (8073), 6266 states have return successors, (14714), 7995 states have call predecessors, (14714), 8073 states have call successors, (14714) [2022-12-13 14:56:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109701 states to 109701 states and 158176 transitions. [2022-12-13 14:56:01,083 INFO L78 Accepts]: Start accepts. Automaton has 109701 states and 158176 transitions. Word has length 184 [2022-12-13 14:56:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:56:01,084 INFO L495 AbstractCegarLoop]: Abstraction has 109701 states and 158176 transitions. [2022-12-13 14:56:01,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 14:56:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 109701 states and 158176 transitions. [2022-12-13 14:56:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-12-13 14:56:01,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:56:01,258 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:56:01,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 14:56:01,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:56:01,459 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:56:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1248051052, now seen corresponding path program 1 times [2022-12-13 14:56:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:01,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773011253] [2022-12-13 14:56:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:01,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:56:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:56:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:56:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:56:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:56:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 14:56:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 14:56:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:56:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 14:56:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:56:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 14:56:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 14:56:01,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:01,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773011253] [2022-12-13 14:56:01,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773011253] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:56:01,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247416282] [2022-12-13 14:56:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:01,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:56:01,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:56:01,596 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:56:01,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:56:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:01,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:56:01,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:56:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 14:56:01,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:56:01,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247416282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:01,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:56:01,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:56:01,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076964811] [2022-12-13 14:56:01,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:01,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:56:01,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:01,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:56:01,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:56:01,725 INFO L87 Difference]: Start difference. First operand 109701 states and 158176 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 14:56:09,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:56:09,168 INFO L93 Difference]: Finished difference Result 190308 states and 272441 transitions. [2022-12-13 14:56:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:56:09,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 184 [2022-12-13 14:56:09,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:56:09,463 INFO L225 Difference]: With dead ends: 190308 [2022-12-13 14:56:09,463 INFO L226 Difference]: Without dead ends: 117191 [2022-12-13 14:56:09,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:56:09,580 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 4120 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4120 SdHoareTripleChecker+Valid, 4408 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:56:09,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4120 Valid, 4408 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:56:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117191 states. [2022-12-13 14:56:17,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117191 to 116847. [2022-12-13 14:56:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116847 states, 101870 states have (on average 1.393452439383528) internal successors, (141951), 102781 states have internal predecessors, (141951), 8251 states have call successors, (8251), 5956 states have call predecessors, (8251), 6724 states have return successors, (15350), 8173 states have call predecessors, (15350), 8251 states have call successors, (15350) [2022-12-13 14:56:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116847 states to 116847 states and 165552 transitions. [2022-12-13 14:56:17,712 INFO L78 Accepts]: Start accepts. Automaton has 116847 states and 165552 transitions. Word has length 184 [2022-12-13 14:56:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:56:17,713 INFO L495 AbstractCegarLoop]: Abstraction has 116847 states and 165552 transitions. [2022-12-13 14:56:17,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 14:56:17,713 INFO L276 IsEmpty]: Start isEmpty. Operand 116847 states and 165552 transitions. [2022-12-13 14:56:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 14:56:17,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:56:17,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:56:17,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:56:18,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 14:56:18,084 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:56:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:18,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2008494395, now seen corresponding path program 1 times [2022-12-13 14:56:18,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:18,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478637144] [2022-12-13 14:56:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:18,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:56:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:56:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:56:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:56:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:56:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:56:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:56:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:56:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 14:56:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:56:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 14:56:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-13 14:56:18,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:18,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478637144] [2022-12-13 14:56:18,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478637144] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:56:18,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154399114] [2022-12-13 14:56:18,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:18,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:56:18,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:56:18,213 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:56:18,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:56:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:56:18,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:56:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 14:56:18,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:56:18,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154399114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:18,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:56:18,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:56:18,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729786267] [2022-12-13 14:56:18,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:18,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:56:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:56:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:56:18,337 INFO L87 Difference]: Start difference. First operand 116847 states and 165552 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:56:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:56:34,100 INFO L93 Difference]: Finished difference Result 340679 states and 485500 transitions. [2022-12-13 14:56:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:56:34,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 185 [2022-12-13 14:56:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:56:34,833 INFO L225 Difference]: With dead ends: 340679 [2022-12-13 14:56:34,833 INFO L226 Difference]: Without dead ends: 225973 [2022-12-13 14:56:35,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:56:35,015 INFO L413 NwaCegarLoop]: 4379 mSDtfsCounter, 191 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 8556 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 14:56:35,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 8556 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:56:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225973 states. [2022-12-13 14:56:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225973 to 225767. [2022-12-13 14:56:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225767 states, 196824 states have (on average 1.3813406901597367) internal successors, (271881), 198645 states have internal predecessors, (271881), 15793 states have call successors, (15793), 11612 states have call predecessors, (15793), 13148 states have return successors, (33676), 15637 states have call predecessors, (33676), 15793 states have call successors, (33676) [2022-12-13 14:56:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225767 states to 225767 states and 321350 transitions. [2022-12-13 14:56:51,761 INFO L78 Accepts]: Start accepts. Automaton has 225767 states and 321350 transitions. Word has length 185 [2022-12-13 14:56:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:56:51,761 INFO L495 AbstractCegarLoop]: Abstraction has 225767 states and 321350 transitions. [2022-12-13 14:56:51,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:56:51,762 INFO L276 IsEmpty]: Start isEmpty. Operand 225767 states and 321350 transitions. [2022-12-13 14:56:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 14:56:52,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:56:52,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:56:52,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 14:56:52,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 14:56:52,347 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:56:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash 816176701, now seen corresponding path program 1 times [2022-12-13 14:56:52,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:52,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100142274] [2022-12-13 14:56:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:56:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:56:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:56:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:56:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:56:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:56:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:56:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:56:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 14:56:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:56:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 14:56:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-13 14:56:52,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:52,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100142274] [2022-12-13 14:56:52,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100142274] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:56:52,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519881827] [2022-12-13 14:56:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:52,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:56:52,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:56:52,469 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:56:52,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:56:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:52,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:56:52,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:56:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 14:56:52,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:56:52,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519881827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:52,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:56:52,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:56:52,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097064224] [2022-12-13 14:56:52,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:52,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:56:52,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:52,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:56:52,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:56:52,642 INFO L87 Difference]: Start difference. First operand 225767 states and 321350 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 14:57:07,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:57:07,522 INFO L93 Difference]: Finished difference Result 369281 states and 531477 transitions. [2022-12-13 14:57:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:57:07,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 185 [2022-12-13 14:57:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:57:08,027 INFO L225 Difference]: With dead ends: 369281 [2022-12-13 14:57:08,027 INFO L226 Difference]: Without dead ends: 190739 [2022-12-13 14:57:08,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:57:08,316 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 4104 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4104 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:57:08,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4104 Valid, 4218 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:57:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190739 states. [2022-12-13 14:57:22,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190739 to 135487. [2022-12-13 14:57:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135487 states, 118716 states have (on average 1.3443933420937364) internal successors, (159601), 119645 states have internal predecessors, (159601), 9029 states have call successors, (9029), 6972 states have call predecessors, (9029), 7740 states have return successors, (17046), 8933 states have call predecessors, (17046), 9029 states have call successors, (17046) [2022-12-13 14:57:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135487 states to 135487 states and 185676 transitions. [2022-12-13 14:57:22,552 INFO L78 Accepts]: Start accepts. Automaton has 135487 states and 185676 transitions. Word has length 185 [2022-12-13 14:57:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:57:22,553 INFO L495 AbstractCegarLoop]: Abstraction has 135487 states and 185676 transitions. [2022-12-13 14:57:22,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 14:57:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 135487 states and 185676 transitions. [2022-12-13 14:57:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 14:57:22,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:57:22,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:57:22,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 14:57:22,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 14:57:22,956 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:57:22,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:57:22,957 INFO L85 PathProgramCache]: Analyzing trace with hash 78079386, now seen corresponding path program 1 times [2022-12-13 14:57:22,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:57:22,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19792102] [2022-12-13 14:57:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:57:22,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:57:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:57:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:57:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:57:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:57:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:57:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:57:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:57:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:57:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 14:57:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:57:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 14:57:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 14:57:23,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:57:23,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19792102] [2022-12-13 14:57:23,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19792102] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:57:23,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257435846] [2022-12-13 14:57:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:57:23,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:57:23,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:57:23,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:57:23,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 14:57:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:57:23,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:57:23,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:57:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 14:57:23,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:57:23,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257435846] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:57:23,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:57:23,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:57:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903668246] [2022-12-13 14:57:23,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:57:23,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:57:23,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:57:23,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:57:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:57:23,165 INFO L87 Difference]: Start difference. First operand 135487 states and 185676 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:57:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:57:44,252 INFO L93 Difference]: Finished difference Result 383435 states and 531276 transitions. [2022-12-13 14:57:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:57:44,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 185 [2022-12-13 14:57:44,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:57:44,961 INFO L225 Difference]: With dead ends: 383435 [2022-12-13 14:57:44,961 INFO L226 Difference]: Without dead ends: 250101 [2022-12-13 14:57:45,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:57:45,193 INFO L413 NwaCegarLoop]: 4370 mSDtfsCounter, 176 mSDsluCounter, 4174 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 8544 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 14:57:45,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 8544 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:57:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250101 states. [2022-12-13 14:58:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250101 to 250099. [2022-12-13 14:58:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250099 states, 218288 states have (on average 1.3349382467199296) internal successors, (291401), 220145 states have internal predecessors, (291401), 17193 states have call successors, (17193), 13080 states have call predecessors, (17193), 14616 states have return successors, (38444), 17001 states have call predecessors, (38444), 17193 states have call successors, (38444) [2022-12-13 14:58:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250099 states to 250099 states and 347038 transitions. [2022-12-13 14:58:08,465 INFO L78 Accepts]: Start accepts. Automaton has 250099 states and 347038 transitions. Word has length 185 [2022-12-13 14:58:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:58:08,466 INFO L495 AbstractCegarLoop]: Abstraction has 250099 states and 347038 transitions. [2022-12-13 14:58:08,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:58:08,466 INFO L276 IsEmpty]: Start isEmpty. Operand 250099 states and 347038 transitions. [2022-12-13 14:58:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 14:58:08,957 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:58:08,957 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:58:08,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 14:58:09,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 14:58:09,159 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:58:09,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:58:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1176543660, now seen corresponding path program 1 times [2022-12-13 14:58:09,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:58:09,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263875745] [2022-12-13 14:58:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:58:09,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:58:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:58:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:58:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:58:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:58:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:58:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:58:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:58:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:58:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 14:58:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:58:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 14:58:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-13 14:58:09,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:58:09,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263875745] [2022-12-13 14:58:09,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263875745] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:58:09,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809326877] [2022-12-13 14:58:09,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:58:09,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:58:09,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:58:09,265 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:58:09,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 14:58:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:58:09,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:58:09,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:58:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 14:58:09,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:58:09,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809326877] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:58:09,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:58:09,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:58:09,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3704367] [2022-12-13 14:58:09,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:58:09,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:58:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:58:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:58:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:58:09,373 INFO L87 Difference]: Start difference. First operand 250099 states and 347038 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:58:46,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:58:46,657 INFO L93 Difference]: Finished difference Result 708523 states and 997486 transitions. [2022-12-13 14:58:46,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:58:46,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 185 [2022-12-13 14:58:46,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:58:48,101 INFO L225 Difference]: With dead ends: 708523 [2022-12-13 14:58:48,101 INFO L226 Difference]: Without dead ends: 460593 [2022-12-13 14:58:48,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:58:48,631 INFO L413 NwaCegarLoop]: 4372 mSDtfsCounter, 178 mSDsluCounter, 4174 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 8546 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 14:58:48,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 8546 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:58:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460593 states. [2022-12-13 14:59:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460593 to 460591. [2022-12-13 14:59:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460591 states, 400428 states have (on average 1.3251645739059206) internal successors, (530633), 404141 states have internal predecessors, (530633), 32657 states have call successors, (32657), 24432 states have call predecessors, (32657), 27504 states have return successors, (86058), 32273 states have call predecessors, (86058), 32657 states have call successors, (86058) [2022-12-13 14:59:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460591 states to 460591 states and 649348 transitions. [2022-12-13 14:59:29,703 INFO L78 Accepts]: Start accepts. Automaton has 460591 states and 649348 transitions. Word has length 185 [2022-12-13 14:59:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:59:29,703 INFO L495 AbstractCegarLoop]: Abstraction has 460591 states and 649348 transitions. [2022-12-13 14:59:29,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:59:29,704 INFO L276 IsEmpty]: Start isEmpty. Operand 460591 states and 649348 transitions. [2022-12-13 14:59:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 14:59:30,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:59:30,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:59:30,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 14:59:30,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 14:59:30,652 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:59:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:59:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash 675112091, now seen corresponding path program 1 times [2022-12-13 14:59:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:59:30,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634300878] [2022-12-13 14:59:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:30,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:59:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:59:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 14:59:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:59:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:59:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:59:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:59:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 14:59:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:59:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 14:59:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 14:59:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 14:59:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 14:59:30,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:59:30,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634300878] [2022-12-13 14:59:30,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634300878] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:59:30,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480537969] [2022-12-13 14:59:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:59:30,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:59:30,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:59:30,790 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:59:30,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 14:59:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:59:30,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:59:30,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:59:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 14:59:30,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:59:30,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480537969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:59:30,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:59:30,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:59:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737037980] [2022-12-13 14:59:30,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:59:30,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:59:30,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:59:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:59:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:59:30,922 INFO L87 Difference]: Start difference. First operand 460591 states and 649348 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 15:00:10,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:00:10,599 INFO L93 Difference]: Finished difference Result 823187 states and 1161230 transitions. [2022-12-13 15:00:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:00:10,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2022-12-13 15:00:10,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:00:12,254 INFO L225 Difference]: With dead ends: 823187 [2022-12-13 15:00:12,254 INFO L226 Difference]: Without dead ends: 471361 [2022-12-13 15:00:12,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:00:12,960 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 4129 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4129 SdHoareTripleChecker+Valid, 4419 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:00:12,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4129 Valid, 4419 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:00:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471361 states. [2022-12-13 15:00:51,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471361 to 459711. [2022-12-13 15:00:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459711 states, 399548 states have (on average 1.3181720343988708) internal successors, (526673), 403261 states have internal predecessors, (526673), 32657 states have call successors, (32657), 24432 states have call predecessors, (32657), 27504 states have return successors, (86058), 32273 states have call predecessors, (86058), 32657 states have call successors, (86058) [2022-12-13 15:00:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459711 states to 459711 states and 645388 transitions. [2022-12-13 15:00:53,439 INFO L78 Accepts]: Start accepts. Automaton has 459711 states and 645388 transitions. Word has length 185 [2022-12-13 15:00:53,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:00:53,439 INFO L495 AbstractCegarLoop]: Abstraction has 459711 states and 645388 transitions. [2022-12-13 15:00:53,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 15:00:53,440 INFO L276 IsEmpty]: Start isEmpty. Operand 459711 states and 645388 transitions. [2022-12-13 15:00:54,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 15:00:54,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:00:54,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:00:54,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 15:00:54,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:00:54,346 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:00:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:00:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -824437031, now seen corresponding path program 1 times [2022-12-13 15:00:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:00:54,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723825524] [2022-12-13 15:00:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:54,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:00:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:00:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 15:00:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 15:00:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 15:00:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 15:00:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 15:00:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 15:00:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 15:00:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 15:00:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 15:00:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 15:00:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 15:00:54,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:00:54,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723825524] [2022-12-13 15:00:54,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723825524] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:00:54,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512820368] [2022-12-13 15:00:54,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:00:54,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:00:54,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:00:54,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:00:54,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 15:00:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:00:54,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:00:54,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:00:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 15:00:54,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:00:54,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512820368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:00:54,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:00:54,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 15:00:54,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14474309] [2022-12-13 15:00:54,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:00:54,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:00:54,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:00:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:00:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:00:54,562 INFO L87 Difference]: Start difference. First operand 459711 states and 645388 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 15:01:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:01:50,078 INFO L93 Difference]: Finished difference Result 1072657 states and 1577046 transitions. [2022-12-13 15:01:50,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:01:50,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 185 [2022-12-13 15:01:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:01:52,395 INFO L225 Difference]: With dead ends: 1072657 [2022-12-13 15:01:52,395 INFO L226 Difference]: Without dead ends: 615151 [2022-12-13 15:01:53,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:01:53,343 INFO L413 NwaCegarLoop]: 4185 mSDtfsCounter, 4128 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4128 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:01:53,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4128 Valid, 4248 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:01:53,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615151 states. [2022-12-13 15:02:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615151 to 613839. [2022-12-13 15:02:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613839 states, 539412 states have (on average 1.3131502450816814) internal successors, (708329), 543125 states have internal predecessors, (708329), 39729 states have call successors, (39729), 31472 states have call predecessors, (39729), 34696 states have return successors, (135265), 39497 states have call predecessors, (135265), 39729 states have call successors, (135265) [2022-12-13 15:02:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613839 states to 613839 states and 883323 transitions. [2022-12-13 15:02:53,369 INFO L78 Accepts]: Start accepts. Automaton has 613839 states and 883323 transitions. Word has length 185 [2022-12-13 15:02:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:02:53,370 INFO L495 AbstractCegarLoop]: Abstraction has 613839 states and 883323 transitions. [2022-12-13 15:02:53,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 15:02:53,370 INFO L276 IsEmpty]: Start isEmpty. Operand 613839 states and 883323 transitions. [2022-12-13 15:02:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 15:02:54,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:02:54,433 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:02:54,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 15:02:54,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:54,635 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:02:54,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:02:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1935967205, now seen corresponding path program 1 times [2022-12-13 15:02:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:02:54,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114727903] [2022-12-13 15:02:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:54,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:02:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:02:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 15:02:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 15:02:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 15:02:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 15:02:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 15:02:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 15:02:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 15:02:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 15:02:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 15:02:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 15:02:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 15:02:54,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:02:54,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114727903] [2022-12-13 15:02:54,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114727903] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:02:54,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827598408] [2022-12-13 15:02:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:02:54,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:02:54,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:02:54,759 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:02:54,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c6eb377-be9b-48b1-a423-c47c6b509530/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 15:02:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:02:54,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:02:54,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:02:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 15:02:54,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:02:54,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827598408] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:02:54,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:02:54,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 15:02:54,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117115878] [2022-12-13 15:02:54,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:02:54,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:02:54,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:02:54,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:02:54,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:02:54,880 INFO L87 Difference]: Start difference. First operand 613839 states and 883323 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 15:03:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:03:57,009 INFO L93 Difference]: Finished difference Result 1110883 states and 1597043 transitions. [2022-12-13 15:03:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:03:57,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2022-12-13 15:03:57,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:03:59,262 INFO L225 Difference]: With dead ends: 1110883 [2022-12-13 15:03:59,262 INFO L226 Difference]: Without dead ends: 647553 [2022-12-13 15:04:00,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:04:00,151 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 4126 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4126 SdHoareTripleChecker+Valid, 4431 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:04:00,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4126 Valid, 4431 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:04:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647553 states. [2022-12-13 15:05:04,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647553 to 637455. [2022-12-13 15:05:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637455 states, 562148 states have (on average 1.3076502984979044) internal successors, (735093), 565861 states have internal predecessors, (735093), 39729 states have call successors, (39729), 32352 states have call predecessors, (39729), 35576 states have return successors, (138235), 39497 states have call predecessors, (138235), 39729 states have call successors, (138235) [2022-12-13 15:05:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637455 states to 637455 states and 913057 transitions. [2022-12-13 15:05:07,509 INFO L78 Accepts]: Start accepts. Automaton has 637455 states and 913057 transitions. Word has length 185 [2022-12-13 15:05:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:05:07,509 INFO L495 AbstractCegarLoop]: Abstraction has 637455 states and 913057 transitions. [2022-12-13 15:05:07,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 15:05:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 637455 states and 913057 transitions.