./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:10:52,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:10:52,313 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:10:52,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:10:52,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:10:52,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:10:52,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:10:52,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:10:52,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:10:52,375 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:10:52,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:10:52,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:10:52,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:10:52,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:10:52,385 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:10:52,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:10:52,386 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:10:52,386 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:10:52,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:10:52,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:10:52,388 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:10:52,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:10:52,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:10:52,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:10:52,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:10:52,393 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:10:52,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:10:52,394 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:10:52,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:10:52,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:10:52,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:10:52,397 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:10:52,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:10:52,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:10:52,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:10:52,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:10:52,400 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:10:52,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:10:52,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:10:52,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:10:52,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:10:52,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:10:52,403 INFO L153 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_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c6d968f3bfd626cfd1fff51fa64657ab37ae457da61332877d0ea5ab7fc90f2 [2024-11-08 18:10:52,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:10:52,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:10:52,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:10:52,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:10:52,801 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:10:52,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c Unable to find full path for "g++" [2024-11-08 18:10:55,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:10:55,444 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:10:55,445 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2024-11-08 18:10:55,460 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/data/e43621dae/5648740ea2114344ae8f00813d7aba77/FLAG136fbfeaf [2024-11-08 18:10:55,487 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/data/e43621dae/5648740ea2114344ae8f00813d7aba77 [2024-11-08 18:10:55,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:10:55,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:10:55,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:10:55,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:10:55,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:10:55,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:10:55" (1/1) ... [2024-11-08 18:10:55,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da4cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:55, skipping insertion in model container [2024-11-08 18:10:55,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:10:55" (1/1) ... [2024-11-08 18:10:55,567 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:10:56,000 WARN L250 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_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2024-11-08 18:10:56,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:10:56,020 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:10:56,120 WARN L250 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_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2024-11-08 18:10:56,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:10:56,161 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:10:56,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56 WrapperNode [2024-11-08 18:10:56,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:10:56,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:10:56,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:10:56,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:10:56,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,245 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 509 [2024-11-08 18:10:56,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:10:56,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:10:56,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:10:56,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:10:56,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,303 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:10:56,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:10:56,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:10:56,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:10:56,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:10:56,344 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (1/1) ... [2024-11-08 18:10:56,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:10:56,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:10:56,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:10:56,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:10:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-08 18:10:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-08 18:10:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:10:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-08 18:10:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-08 18:10:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-08 18:10:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-08 18:10:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-11-08 18:10:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-11-08 18:10:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 18:10:56,440 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 18:10:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:10:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-08 18:10:56,440 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-08 18:10:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:10:56,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:10:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-08 18:10:56,444 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-08 18:10:56,633 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:10:56,637 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:10:57,572 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-08 18:10:57,572 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:10:57,601 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:10:57,601 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:10:57,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:10:57 BoogieIcfgContainer [2024-11-08 18:10:57,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:10:57,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:10:57,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:10:57,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:10:57,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:10:55" (1/3) ... [2024-11-08 18:10:57,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f65f7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:10:57, skipping insertion in model container [2024-11-08 18:10:57,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:10:56" (2/3) ... [2024-11-08 18:10:57,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f65f7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:10:57, skipping insertion in model container [2024-11-08 18:10:57,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:10:57" (3/3) ... [2024-11-08 18:10:57,617 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2024-11-08 18:10:57,640 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:10:57,640 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:10:57,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:10:57,730 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7930a0a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:10:57,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:10:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 142 states have (on average 1.5492957746478873) internal successors, (220), 143 states have internal predecessors, (220), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-08 18:10:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 18:10:57,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:57,749 INFO L215 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] [2024-11-08 18:10:57,750 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:57,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1900454131, now seen corresponding path program 1 times [2024-11-08 18:10:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:57,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399918928] [2024-11-08 18:10:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:57,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:58,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 18:10:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:10:58,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:58,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399918928] [2024-11-08 18:10:58,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399918928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:10:58,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:10:58,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:10:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795020223] [2024-11-08 18:10:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:10:58,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:10:58,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:58,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:10:58,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:10:58,380 INFO L87 Difference]: Start difference. First operand has 182 states, 142 states have (on average 1.5492957746478873) internal successors, (220), 143 states have internal predecessors, (220), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:10:58,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:58,460 INFO L93 Difference]: Finished difference Result 348 states and 564 transitions. [2024-11-08 18:10:58,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:10:58,463 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-08 18:10:58,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:58,475 INFO L225 Difference]: With dead ends: 348 [2024-11-08 18:10:58,475 INFO L226 Difference]: Without dead ends: 178 [2024-11-08 18:10:58,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:10:58,487 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:58,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:10:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-08 18:10:58,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-08 18:10:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 139 states have (on average 1.5323741007194245) internal successors, (213), 139 states have internal predecessors, (213), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-08 18:10:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 275 transitions. [2024-11-08 18:10:58,566 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 275 transitions. Word has length 29 [2024-11-08 18:10:58,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:10:58,570 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 275 transitions. [2024-11-08 18:10:58,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:10:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 275 transitions. [2024-11-08 18:10:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 18:10:58,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:58,573 INFO L215 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] [2024-11-08 18:10:58,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:10:58,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:58,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:58,574 INFO L85 PathProgramCache]: Analyzing trace with hash 95015797, now seen corresponding path program 1 times [2024-11-08 18:10:58,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:58,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578033392] [2024-11-08 18:10:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:58,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 18:10:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:10:59,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:59,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578033392] [2024-11-08 18:10:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578033392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:10:59,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:10:59,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:10:59,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371799651] [2024-11-08 18:10:59,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:10:59,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:10:59,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:59,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:10:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:10:59,026 INFO L87 Difference]: Start difference. First operand 178 states and 275 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:10:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:59,281 INFO L93 Difference]: Finished difference Result 456 states and 712 transitions. [2024-11-08 18:10:59,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:10:59,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-08 18:10:59,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:59,291 INFO L225 Difference]: With dead ends: 456 [2024-11-08 18:10:59,291 INFO L226 Difference]: Without dead ends: 292 [2024-11-08 18:10:59,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:10:59,298 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 135 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:59,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1317 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:10:59,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-08 18:10:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 178. [2024-11-08 18:10:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 139 states have (on average 1.4460431654676258) internal successors, (201), 139 states have internal predecessors, (201), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-08 18:10:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 263 transitions. [2024-11-08 18:10:59,349 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 263 transitions. Word has length 29 [2024-11-08 18:10:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:10:59,350 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 263 transitions. [2024-11-08 18:10:59,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:10:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 263 transitions. [2024-11-08 18:10:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 18:10:59,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:59,354 INFO L215 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] [2024-11-08 18:10:59,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:10:59,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:59,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash -179548304, now seen corresponding path program 1 times [2024-11-08 18:10:59,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:59,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804315840] [2024-11-08 18:10:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:59,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:59,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:10:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:10:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804315840] [2024-11-08 18:10:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804315840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:10:59,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:10:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:10:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11630742] [2024-11-08 18:10:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:10:59,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:10:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:10:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:10:59,768 INFO L87 Difference]: Start difference. First operand 178 states and 263 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:10:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:59,886 INFO L93 Difference]: Finished difference Result 343 states and 516 transitions. [2024-11-08 18:10:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:10:59,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-11-08 18:10:59,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:59,891 INFO L225 Difference]: With dead ends: 343 [2024-11-08 18:10:59,892 INFO L226 Difference]: Without dead ends: 182 [2024-11-08 18:10:59,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:10:59,894 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 3 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:59,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 761 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:10:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-08 18:10:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-08 18:10:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 142 states have (on average 1.4366197183098592) internal successors, (204), 142 states have internal predecessors, (204), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-08 18:10:59,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 266 transitions. [2024-11-08 18:10:59,936 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 266 transitions. Word has length 40 [2024-11-08 18:10:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:10:59,937 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 266 transitions. [2024-11-08 18:10:59,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 18:10:59,937 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 266 transitions. [2024-11-08 18:10:59,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 18:10:59,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:59,942 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:10:59,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:10:59,942 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:59,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:59,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1119153730, now seen corresponding path program 1 times [2024-11-08 18:10:59,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:59,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308305232] [2024-11-08 18:10:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:59,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 18:11:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:11:00,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308305232] [2024-11-08 18:11:00,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308305232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:00,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:00,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:11:00,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585754306] [2024-11-08 18:11:00,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:00,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:11:00,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:11:00,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:11:00,132 INFO L87 Difference]: Start difference. First operand 182 states and 266 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:00,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:00,191 INFO L93 Difference]: Finished difference Result 500 states and 741 transitions. [2024-11-08 18:11:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:11:00,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-08 18:11:00,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:00,198 INFO L225 Difference]: With dead ends: 500 [2024-11-08 18:11:00,200 INFO L226 Difference]: Without dead ends: 335 [2024-11-08 18:11:00,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:11:00,207 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 214 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:00,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 528 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-08 18:11:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 328. [2024-11-08 18:11:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 251 states have (on average 1.4581673306772909) internal successors, (366), 252 states have internal predecessors, (366), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-08 18:11:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 486 transitions. [2024-11-08 18:11:00,266 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 486 transitions. Word has length 56 [2024-11-08 18:11:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:00,269 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 486 transitions. [2024-11-08 18:11:00,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 486 transitions. [2024-11-08 18:11:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:11:00,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:00,274 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:11:00,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:11:00,275 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:00,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:00,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2070224884, now seen corresponding path program 1 times [2024-11-08 18:11:00,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:00,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158874572] [2024-11-08 18:11:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:00,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 18:11:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:11:00,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:00,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158874572] [2024-11-08 18:11:00,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158874572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:00,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:00,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:11:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664662584] [2024-11-08 18:11:00,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:00,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:11:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:00,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:11:00,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:11:00,436 INFO L87 Difference]: Start difference. First operand 328 states and 486 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:00,539 INFO L93 Difference]: Finished difference Result 923 states and 1379 transitions. [2024-11-08 18:11:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:11:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-08 18:11:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:00,555 INFO L225 Difference]: With dead ends: 923 [2024-11-08 18:11:00,555 INFO L226 Difference]: Without dead ends: 612 [2024-11-08 18:11:00,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:11:00,558 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 216 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:00,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 550 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-08 18:11:00,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 606. [2024-11-08 18:11:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 457 states have (on average 1.4682713347921226) internal successors, (671), 460 states have internal predecessors, (671), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-08 18:11:00,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 905 transitions. [2024-11-08 18:11:00,646 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 905 transitions. Word has length 57 [2024-11-08 18:11:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:00,648 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 905 transitions. [2024-11-08 18:11:00,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 905 transitions. [2024-11-08 18:11:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 18:11:00,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:00,657 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:11:00,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:11:00,657 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:00,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:00,658 INFO L85 PathProgramCache]: Analyzing trace with hash 944878734, now seen corresponding path program 1 times [2024-11-08 18:11:00,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:00,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147791365] [2024-11-08 18:11:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:00,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 18:11:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:11:00,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:00,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147791365] [2024-11-08 18:11:00,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147791365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:00,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:00,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:11:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732260720] [2024-11-08 18:11:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:00,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:11:00,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:11:00,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:00,918 INFO L87 Difference]: Start difference. First operand 606 states and 905 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:01,211 INFO L93 Difference]: Finished difference Result 1300 states and 1937 transitions. [2024-11-08 18:11:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:11:01,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-08 18:11:01,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:01,218 INFO L225 Difference]: With dead ends: 1300 [2024-11-08 18:11:01,219 INFO L226 Difference]: Without dead ends: 711 [2024-11-08 18:11:01,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:11:01,222 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 371 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:01,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 675 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:11:01,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-11-08 18:11:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 695. [2024-11-08 18:11:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 533 states have (on average 1.452157598499062) internal successors, (774), 536 states have internal predecessors, (774), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:11:01,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1022 transitions. [2024-11-08 18:11:01,321 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1022 transitions. Word has length 57 [2024-11-08 18:11:01,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:01,322 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 1022 transitions. [2024-11-08 18:11:01,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1022 transitions. [2024-11-08 18:11:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 18:11:01,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:01,325 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:11:01,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:11:01,326 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:01,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:01,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1096345631, now seen corresponding path program 1 times [2024-11-08 18:11:01,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:01,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651598868] [2024-11-08 18:11:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:01,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:01,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:01,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:01,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 18:11:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:11:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651598868] [2024-11-08 18:11:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651598868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:01,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:01,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:11:01,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581460179] [2024-11-08 18:11:01,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:01,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:11:01,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:11:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:01,679 INFO L87 Difference]: Start difference. First operand 695 states and 1022 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:01,941 INFO L93 Difference]: Finished difference Result 1304 states and 1937 transitions. [2024-11-08 18:11:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:11:01,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2024-11-08 18:11:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:01,947 INFO L225 Difference]: With dead ends: 1304 [2024-11-08 18:11:01,947 INFO L226 Difference]: Without dead ends: 715 [2024-11-08 18:11:01,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:11:01,950 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 371 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:01,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 675 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:11:01,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-08 18:11:02,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 703. [2024-11-08 18:11:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 541 states have (on average 1.44547134935305) internal successors, (782), 544 states have internal predecessors, (782), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:11:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1030 transitions. [2024-11-08 18:11:02,014 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1030 transitions. Word has length 58 [2024-11-08 18:11:02,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:02,014 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1030 transitions. [2024-11-08 18:11:02,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:02,015 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1030 transitions. [2024-11-08 18:11:02,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 18:11:02,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:02,016 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:11:02,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:11:02,016 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:02,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:02,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1927837011, now seen corresponding path program 1 times [2024-11-08 18:11:02,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:02,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377988065] [2024-11-08 18:11:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:02,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:02,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:02,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:02,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-08 18:11:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:11:02,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:02,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377988065] [2024-11-08 18:11:02,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377988065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:02,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:02,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:02,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674291419] [2024-11-08 18:11:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:02,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:02,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:02,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:02,264 INFO L87 Difference]: Start difference. First operand 703 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:02,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:02,493 INFO L93 Difference]: Finished difference Result 1292 states and 1917 transitions. [2024-11-08 18:11:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:11:02,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-11-08 18:11:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:02,499 INFO L225 Difference]: With dead ends: 1292 [2024-11-08 18:11:02,499 INFO L226 Difference]: Without dead ends: 703 [2024-11-08 18:11:02,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:02,502 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 61 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:02,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 669 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:11:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-08 18:11:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2024-11-08 18:11:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 541 states have (on average 1.4380776340110906) internal successors, (778), 544 states have internal predecessors, (778), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:11:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1026 transitions. [2024-11-08 18:11:02,565 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1026 transitions. Word has length 60 [2024-11-08 18:11:02,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:02,566 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1026 transitions. [2024-11-08 18:11:02,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:11:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1026 transitions. [2024-11-08 18:11:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:11:02,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:02,567 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:11:02,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:11:02,568 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:02,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1087849692, now seen corresponding path program 1 times [2024-11-08 18:11:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781754102] [2024-11-08 18:11:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:02,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:02,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:02,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:02,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:11:02,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:02,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781754102] [2024-11-08 18:11:02,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781754102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:02,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:02,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312941882] [2024-11-08 18:11:02,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:02,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:02,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:02,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:02,823 INFO L87 Difference]: Start difference. First operand 703 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 18:11:02,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:02,916 INFO L93 Difference]: Finished difference Result 1312 states and 1941 transitions. [2024-11-08 18:11:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:11:02,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 61 [2024-11-08 18:11:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:02,922 INFO L225 Difference]: With dead ends: 1312 [2024-11-08 18:11:02,922 INFO L226 Difference]: Without dead ends: 723 [2024-11-08 18:11:02,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:02,925 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 4 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:02,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 773 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:02,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-08 18:11:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2024-11-08 18:11:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 557 states have (on average 1.4254937163375225) internal successors, (794), 560 states have internal predecessors, (794), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:11:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1042 transitions. [2024-11-08 18:11:02,994 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1042 transitions. Word has length 61 [2024-11-08 18:11:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:02,994 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1042 transitions. [2024-11-08 18:11:02,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-08 18:11:02,995 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1042 transitions. [2024-11-08 18:11:02,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 18:11:02,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:02,996 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 18:11:02,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:11:02,997 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:02,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:02,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1035243934, now seen corresponding path program 1 times [2024-11-08 18:11:02,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:02,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922330592] [2024-11-08 18:11:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:02,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:11:03,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:03,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922330592] [2024-11-08 18:11:03,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922330592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:03,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:03,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371282124] [2024-11-08 18:11:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:03,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:03,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:03,284 INFO L87 Difference]: Start difference. First operand 723 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:11:03,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:03,419 INFO L93 Difference]: Finished difference Result 1352 states and 1985 transitions. [2024-11-08 18:11:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:11:03,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2024-11-08 18:11:03,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:03,427 INFO L225 Difference]: With dead ends: 1352 [2024-11-08 18:11:03,427 INFO L226 Difference]: Without dead ends: 743 [2024-11-08 18:11:03,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:03,431 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 4 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:03,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 759 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:03,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-11-08 18:11:03,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2024-11-08 18:11:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 573 states have (on average 1.4136125654450262) internal successors, (810), 576 states have internal predecessors, (810), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:11:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1058 transitions. [2024-11-08 18:11:03,504 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1058 transitions. Word has length 69 [2024-11-08 18:11:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:03,505 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 1058 transitions. [2024-11-08 18:11:03,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 18:11:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1058 transitions. [2024-11-08 18:11:03,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 18:11:03,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:03,510 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:03,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:11:03,511 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:03,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:03,513 INFO L85 PathProgramCache]: Analyzing trace with hash -396035956, now seen corresponding path program 1 times [2024-11-08 18:11:03,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:03,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014297267] [2024-11-08 18:11:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:03,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:11:03,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:03,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014297267] [2024-11-08 18:11:03,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014297267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:03,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:03,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:03,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212973433] [2024-11-08 18:11:03,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:03,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:03,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:03,781 INFO L87 Difference]: Start difference. First operand 743 states and 1058 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-08 18:11:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:03,921 INFO L93 Difference]: Finished difference Result 1388 states and 2001 transitions. [2024-11-08 18:11:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:11:03,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-11-08 18:11:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:03,929 INFO L225 Difference]: With dead ends: 1388 [2024-11-08 18:11:03,930 INFO L226 Difference]: Without dead ends: 759 [2024-11-08 18:11:03,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:03,933 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 3 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:03,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 769 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2024-11-08 18:11:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2024-11-08 18:11:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 585 states have (on average 1.405128205128205) internal successors, (822), 588 states have internal predecessors, (822), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:11:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1070 transitions. [2024-11-08 18:11:04,030 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1070 transitions. Word has length 77 [2024-11-08 18:11:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:04,031 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1070 transitions. [2024-11-08 18:11:04,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-08 18:11:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1070 transitions. [2024-11-08 18:11:04,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 18:11:04,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:04,034 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:04,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:11:04,034 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:04,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:04,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2000423347, now seen corresponding path program 1 times [2024-11-08 18:11:04,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:04,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392720800] [2024-11-08 18:11:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:04,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 18:11:04,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:04,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392720800] [2024-11-08 18:11:04,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392720800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:04,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:04,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:04,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512845590] [2024-11-08 18:11:04,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:04,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:04,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:04,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:04,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:04,327 INFO L87 Difference]: Start difference. First operand 759 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-08 18:11:04,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:04,461 INFO L93 Difference]: Finished difference Result 1424 states and 2041 transitions. [2024-11-08 18:11:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:11:04,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-11-08 18:11:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:04,469 INFO L225 Difference]: With dead ends: 1424 [2024-11-08 18:11:04,469 INFO L226 Difference]: Without dead ends: 779 [2024-11-08 18:11:04,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:04,473 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 4 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:04,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 759 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:11:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-11-08 18:11:04,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2024-11-08 18:11:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 601 states have (on average 1.394342762063228) internal successors, (838), 604 states have internal predecessors, (838), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:11:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1086 transitions. [2024-11-08 18:11:04,584 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1086 transitions. Word has length 77 [2024-11-08 18:11:04,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:04,585 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1086 transitions. [2024-11-08 18:11:04,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-08 18:11:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1086 transitions. [2024-11-08 18:11:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 18:11:04,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:04,589 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:04,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:11:04,589 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:04,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1621267123, now seen corresponding path program 1 times [2024-11-08 18:11:04,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:04,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962176936] [2024-11-08 18:11:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:04,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:11:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:11:04,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:04,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962176936] [2024-11-08 18:11:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962176936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:04,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:04,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144155694] [2024-11-08 18:11:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:04,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:04,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:04,919 INFO L87 Difference]: Start difference. First operand 779 states and 1086 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 18:11:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:05,030 INFO L93 Difference]: Finished difference Result 1468 states and 2069 transitions. [2024-11-08 18:11:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:11:05,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 85 [2024-11-08 18:11:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:05,038 INFO L225 Difference]: With dead ends: 1468 [2024-11-08 18:11:05,038 INFO L226 Difference]: Without dead ends: 803 [2024-11-08 18:11:05,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:05,042 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 5 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:05,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 771 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:05,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-08 18:11:05,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-11-08 18:11:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 621 states have (on average 1.3816425120772946) internal successors, (858), 624 states have internal predecessors, (858), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-08 18:11:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1106 transitions. [2024-11-08 18:11:05,115 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1106 transitions. Word has length 85 [2024-11-08 18:11:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:05,115 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1106 transitions. [2024-11-08 18:11:05,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 18:11:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1106 transitions. [2024-11-08 18:11:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-08 18:11:05,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:05,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:05,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:11:05,119 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:05,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash 785362228, now seen corresponding path program 1 times [2024-11-08 18:11:05,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:05,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931707757] [2024-11-08 18:11:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:05,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:05,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:05,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:05,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:05,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:05,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:05,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:11:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:06,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 18:11:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:11:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931707757] [2024-11-08 18:11:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931707757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:06,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:06,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:11:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720115633] [2024-11-08 18:11:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:06,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:11:06,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:11:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:11:06,009 INFO L87 Difference]: Start difference. First operand 803 states and 1106 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-08 18:11:06,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:06,467 INFO L93 Difference]: Finished difference Result 2066 states and 2836 transitions. [2024-11-08 18:11:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:11:06,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 88 [2024-11-08 18:11:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:06,478 INFO L225 Difference]: With dead ends: 2066 [2024-11-08 18:11:06,478 INFO L226 Difference]: Without dead ends: 1377 [2024-11-08 18:11:06,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:11:06,482 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 212 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:06,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1455 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:11:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2024-11-08 18:11:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1087. [2024-11-08 18:11:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 832 states have (on average 1.3701923076923077) internal successors, (1140), 837 states have internal predecessors, (1140), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-08 18:11:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1484 transitions. [2024-11-08 18:11:06,604 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1484 transitions. Word has length 88 [2024-11-08 18:11:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:06,605 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1484 transitions. [2024-11-08 18:11:06,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-08 18:11:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1484 transitions. [2024-11-08 18:11:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 18:11:06,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:06,608 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:06,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:11:06,608 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:06,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash -515576598, now seen corresponding path program 1 times [2024-11-08 18:11:06,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:06,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748326604] [2024-11-08 18:11:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:06,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:06,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:06,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:06,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:06,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:06,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:06,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:11:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:06,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-08 18:11:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 18:11:07,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:07,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748326604] [2024-11-08 18:11:07,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748326604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:07,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:07,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:07,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115873228] [2024-11-08 18:11:07,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:07,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:07,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:07,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:07,004 INFO L87 Difference]: Start difference. First operand 1087 states and 1484 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-08 18:11:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:07,133 INFO L93 Difference]: Finished difference Result 2016 states and 2777 transitions. [2024-11-08 18:11:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:11:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 92 [2024-11-08 18:11:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:07,142 INFO L225 Difference]: With dead ends: 2016 [2024-11-08 18:11:07,143 INFO L226 Difference]: Without dead ends: 1111 [2024-11-08 18:11:07,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:07,149 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 3 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:07,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 769 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2024-11-08 18:11:07,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2024-11-08 18:11:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 850 states have (on average 1.3623529411764705) internal successors, (1158), 855 states have internal predecessors, (1158), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-08 18:11:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1502 transitions. [2024-11-08 18:11:07,276 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1502 transitions. Word has length 92 [2024-11-08 18:11:07,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:07,277 INFO L471 AbstractCegarLoop]: Abstraction has 1111 states and 1502 transitions. [2024-11-08 18:11:07,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-08 18:11:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1502 transitions. [2024-11-08 18:11:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 18:11:07,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:07,281 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:07,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:11:07,282 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:07,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:07,282 INFO L85 PathProgramCache]: Analyzing trace with hash 66931212, now seen corresponding path program 1 times [2024-11-08 18:11:07,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:07,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389849848] [2024-11-08 18:11:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:07,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:07,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:07,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:07,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:07,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:07,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:07,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:11:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:07,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 18:11:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 18:11:07,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:07,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389849848] [2024-11-08 18:11:07,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389849848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:07,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:07,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 18:11:07,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636510900] [2024-11-08 18:11:07,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:07,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:11:07,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:07,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:11:07,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:11:07,831 INFO L87 Difference]: Start difference. First operand 1111 states and 1502 transitions. Second operand has 8 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 18:11:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:08,112 INFO L93 Difference]: Finished difference Result 1545 states and 2196 transitions. [2024-11-08 18:11:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:11:08,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2024-11-08 18:11:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:08,125 INFO L225 Difference]: With dead ends: 1545 [2024-11-08 18:11:08,125 INFO L226 Difference]: Without dead ends: 1543 [2024-11-08 18:11:08,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:11:08,127 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 138 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2944 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:08,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2944 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:11:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2024-11-08 18:11:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1119. [2024-11-08 18:11:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 854 states have (on average 1.360655737704918) internal successors, (1162), 861 states have internal predecessors, (1162), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-08 18:11:08,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1510 transitions. [2024-11-08 18:11:08,277 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1510 transitions. Word has length 91 [2024-11-08 18:11:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:08,278 INFO L471 AbstractCegarLoop]: Abstraction has 1119 states and 1510 transitions. [2024-11-08 18:11:08,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 18:11:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1510 transitions. [2024-11-08 18:11:08,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 18:11:08,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:08,281 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:08,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:11:08,281 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:08,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1224172828, now seen corresponding path program 1 times [2024-11-08 18:11:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:08,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631908703] [2024-11-08 18:11:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:08,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:08,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:08,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:08,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:08,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:08,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:11:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:08,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 18:11:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 18:11:08,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:08,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631908703] [2024-11-08 18:11:08,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631908703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:08,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:08,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:11:08,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410187019] [2024-11-08 18:11:08,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:08,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:11:08,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:11:08,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:11:08,562 INFO L87 Difference]: Start difference. First operand 1119 states and 1510 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 18:11:08,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:08,881 INFO L93 Difference]: Finished difference Result 2023 states and 2739 transitions. [2024-11-08 18:11:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:11:08,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 94 [2024-11-08 18:11:08,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:08,891 INFO L225 Difference]: With dead ends: 2023 [2024-11-08 18:11:08,892 INFO L226 Difference]: Without dead ends: 1168 [2024-11-08 18:11:08,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:11:08,896 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 258 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:08,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1497 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:11:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-08 18:11:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1126. [2024-11-08 18:11:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 872 states have (on average 1.349770642201835) internal successors, (1177), 884 states have internal predecessors, (1177), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-08 18:11:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1501 transitions. [2024-11-08 18:11:09,025 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1501 transitions. Word has length 94 [2024-11-08 18:11:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:09,026 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 1501 transitions. [2024-11-08 18:11:09,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 18:11:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1501 transitions. [2024-11-08 18:11:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-08 18:11:09,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:09,028 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:09,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:11:09,029 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:09,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:09,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1033507354, now seen corresponding path program 1 times [2024-11-08 18:11:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362036359] [2024-11-08 18:11:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:09,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:09,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:09,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:09,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:09,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:09,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:09,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:11:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:09,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 18:11:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:09,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 18:11:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 18:11:09,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362036359] [2024-11-08 18:11:09,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362036359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:09,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:09,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:11:09,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333078095] [2024-11-08 18:11:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:09,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:11:09,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:09,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:11:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:11:09,855 INFO L87 Difference]: Start difference. First operand 1126 states and 1501 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-08 18:11:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:10,291 INFO L93 Difference]: Finished difference Result 2006 states and 2686 transitions. [2024-11-08 18:11:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:11:10,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-08 18:11:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:10,303 INFO L225 Difference]: With dead ends: 2006 [2024-11-08 18:11:10,303 INFO L226 Difference]: Without dead ends: 1124 [2024-11-08 18:11:10,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:11:10,308 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 152 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:10,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1617 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:11:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-08 18:11:10,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1015. [2024-11-08 18:11:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 788 states have (on average 1.3527918781725887) internal successors, (1066), 798 states have internal predecessors, (1066), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-08 18:11:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1356 transitions. [2024-11-08 18:11:10,475 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1356 transitions. Word has length 96 [2024-11-08 18:11:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:10,476 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1356 transitions. [2024-11-08 18:11:10,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-08 18:11:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1356 transitions. [2024-11-08 18:11:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 18:11:10,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:10,479 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:10,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 18:11:10,479 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:10,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1510626102, now seen corresponding path program 1 times [2024-11-08 18:11:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:10,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477914095] [2024-11-08 18:11:10,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:10,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:11,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:11,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:11,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:11,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:11,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:11,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:11:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:11,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-08 18:11:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:11,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-08 18:11:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:11:11,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:11,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477914095] [2024-11-08 18:11:11,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477914095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:11,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:11,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:11:11,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495572669] [2024-11-08 18:11:11,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:11,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:11:11,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:11,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:11:11,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:11:11,254 INFO L87 Difference]: Start difference. First operand 1015 states and 1356 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:11,960 INFO L93 Difference]: Finished difference Result 1949 states and 2601 transitions. [2024-11-08 18:11:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:11:11,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2024-11-08 18:11:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:11,969 INFO L225 Difference]: With dead ends: 1949 [2024-11-08 18:11:11,970 INFO L226 Difference]: Without dead ends: 1108 [2024-11-08 18:11:11,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:11:11,973 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 422 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:11,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1496 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:11:11,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-11-08 18:11:12,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1053. [2024-11-08 18:11:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 811 states have (on average 1.3316892725030827) internal successors, (1080), 822 states have internal predecessors, (1080), 154 states have call successors, (154), 87 states have call predecessors, (154), 87 states have return successors, (154), 143 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-08 18:11:12,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1388 transitions. [2024-11-08 18:11:12,138 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1388 transitions. Word has length 97 [2024-11-08 18:11:12,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:12,139 INFO L471 AbstractCegarLoop]: Abstraction has 1053 states and 1388 transitions. [2024-11-08 18:11:12,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:12,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1388 transitions. [2024-11-08 18:11:12,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 18:11:12,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:12,141 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:12,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 18:11:12,142 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:12,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:12,143 INFO L85 PathProgramCache]: Analyzing trace with hash -495257213, now seen corresponding path program 1 times [2024-11-08 18:11:12,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:12,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605888006] [2024-11-08 18:11:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:12,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:12,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:11:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:12,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 18:11:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:12,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 18:11:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:12,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 18:11:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:12,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 18:11:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:12,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 18:11:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:12,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-08 18:11:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 18:11:12,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:12,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605888006] [2024-11-08 18:11:12,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605888006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:12,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:12,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:11:12,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105380952] [2024-11-08 18:11:12,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:12,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:11:12,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:12,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:11:12,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:11:12,874 INFO L87 Difference]: Start difference. First operand 1053 states and 1388 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-08 18:11:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:13,577 INFO L93 Difference]: Finished difference Result 2038 states and 2671 transitions. [2024-11-08 18:11:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 18:11:13,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 99 [2024-11-08 18:11:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:13,587 INFO L225 Difference]: With dead ends: 2038 [2024-11-08 18:11:13,587 INFO L226 Difference]: Without dead ends: 1172 [2024-11-08 18:11:13,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:11:13,591 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 411 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:13,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1286 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:11:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-11-08 18:11:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1075. [2024-11-08 18:11:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 825 states have (on average 1.3163636363636364) internal successors, (1086), 837 states have internal predecessors, (1086), 157 states have call successors, (157), 92 states have call predecessors, (157), 92 states have return successors, (157), 145 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-08 18:11:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1400 transitions. [2024-11-08 18:11:13,766 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1400 transitions. Word has length 99 [2024-11-08 18:11:13,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:13,767 INFO L471 AbstractCegarLoop]: Abstraction has 1075 states and 1400 transitions. [2024-11-08 18:11:13,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-08 18:11:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1400 transitions. [2024-11-08 18:11:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 18:11:13,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:13,769 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:13,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 18:11:13,770 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:13,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash -620060830, now seen corresponding path program 1 times [2024-11-08 18:11:13,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:13,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143799353] [2024-11-08 18:11:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:13,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:13,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 18:11:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:13,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:11:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:13,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 18:11:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:13,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-08 18:11:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:13,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 18:11:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:13,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 18:11:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:13,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 18:11:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:11:13,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:13,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143799353] [2024-11-08 18:11:13,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143799353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:13,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:13,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730106750] [2024-11-08 18:11:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:13,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:13,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:13,967 INFO L87 Difference]: Start difference. First operand 1075 states and 1400 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:14,513 INFO L93 Difference]: Finished difference Result 2797 states and 3672 transitions. [2024-11-08 18:11:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:11:14,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2024-11-08 18:11:14,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:14,530 INFO L225 Difference]: With dead ends: 2797 [2024-11-08 18:11:14,531 INFO L226 Difference]: Without dead ends: 1987 [2024-11-08 18:11:14,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:14,535 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 201 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:14,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1159 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:11:14,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2024-11-08 18:11:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1802. [2024-11-08 18:11:14,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1364 states have (on average 1.3189149560117301) internal successors, (1799), 1384 states have internal predecessors, (1799), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-08 18:11:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2359 transitions. [2024-11-08 18:11:14,866 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2359 transitions. Word has length 100 [2024-11-08 18:11:14,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:14,867 INFO L471 AbstractCegarLoop]: Abstraction has 1802 states and 2359 transitions. [2024-11-08 18:11:14,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2359 transitions. [2024-11-08 18:11:14,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 18:11:14,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:14,870 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:14,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 18:11:14,871 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:14,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:14,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1743890327, now seen corresponding path program 1 times [2024-11-08 18:11:14,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:14,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344995351] [2024-11-08 18:11:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:14,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:15,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:15,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 18:11:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:15,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:11:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:15,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 18:11:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:15,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-08 18:11:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:15,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 18:11:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:15,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 18:11:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:15,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 18:11:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:11:15,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:15,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344995351] [2024-11-08 18:11:15,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344995351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:15,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:15,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:15,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80054537] [2024-11-08 18:11:15,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:15,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:15,063 INFO L87 Difference]: Start difference. First operand 1802 states and 2359 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:15,626 INFO L93 Difference]: Finished difference Result 4572 states and 6021 transitions. [2024-11-08 18:11:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:11:15,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-08 18:11:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:15,648 INFO L225 Difference]: With dead ends: 4572 [2024-11-08 18:11:15,649 INFO L226 Difference]: Without dead ends: 3108 [2024-11-08 18:11:15,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:15,656 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 209 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:15,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1197 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:11:15,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2024-11-08 18:11:16,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2823. [2024-11-08 18:11:16,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2110 states have (on average 1.3109004739336494) internal successors, (2766), 2141 states have internal predecessors, (2766), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2024-11-08 18:11:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 3686 transitions. [2024-11-08 18:11:16,189 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 3686 transitions. Word has length 102 [2024-11-08 18:11:16,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:16,189 INFO L471 AbstractCegarLoop]: Abstraction has 2823 states and 3686 transitions. [2024-11-08 18:11:16,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 3686 transitions. [2024-11-08 18:11:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 18:11:16,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:16,194 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:16,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 18:11:16,194 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:16,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash -589651673, now seen corresponding path program 1 times [2024-11-08 18:11:16,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:16,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743589748] [2024-11-08 18:11:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:16,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:16,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:16,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 18:11:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:16,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:16,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-08 18:11:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:16,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 18:11:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:16,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-08 18:11:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:16,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 18:11:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:16,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 18:11:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:11:16,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:16,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743589748] [2024-11-08 18:11:16,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743589748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:16,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059034036] [2024-11-08 18:11:16,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:16,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:16,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:16,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:16,376 INFO L87 Difference]: Start difference. First operand 2823 states and 3686 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:17,113 INFO L93 Difference]: Finished difference Result 6593 states and 8651 transitions. [2024-11-08 18:11:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:11:17,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-08 18:11:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:17,137 INFO L225 Difference]: With dead ends: 6593 [2024-11-08 18:11:17,138 INFO L226 Difference]: Without dead ends: 4228 [2024-11-08 18:11:17,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:17,147 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 202 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:17,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1211 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:11:17,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4228 states. [2024-11-08 18:11:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4228 to 4041. [2024-11-08 18:11:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4041 states, 3004 states have (on average 1.307589880159787) internal successors, (3928), 3048 states have internal predecessors, (3928), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-08 18:11:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 5272 transitions. [2024-11-08 18:11:18,070 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 5272 transitions. Word has length 102 [2024-11-08 18:11:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:18,071 INFO L471 AbstractCegarLoop]: Abstraction has 4041 states and 5272 transitions. [2024-11-08 18:11:18,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 5272 transitions. [2024-11-08 18:11:18,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:11:18,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:18,075 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:18,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 18:11:18,076 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:18,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash 832863018, now seen corresponding path program 1 times [2024-11-08 18:11:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986753808] [2024-11-08 18:11:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:18,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:18,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 18:11:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:18,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-08 18:11:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:18,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-08 18:11:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:18,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 18:11:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:18,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 18:11:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:18,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-08 18:11:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:18,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 18:11:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:11:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:18,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986753808] [2024-11-08 18:11:18,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986753808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:18,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:18,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:11:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253079380] [2024-11-08 18:11:18,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:18,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:11:18,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:11:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:11:18,203 INFO L87 Difference]: Start difference. First operand 4041 states and 5272 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:18,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:18,947 INFO L93 Difference]: Finished difference Result 7760 states and 10174 transitions. [2024-11-08 18:11:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:11:18,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2024-11-08 18:11:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:19,004 INFO L225 Difference]: With dead ends: 7760 [2024-11-08 18:11:19,004 INFO L226 Difference]: Without dead ends: 4074 [2024-11-08 18:11:19,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:11:19,022 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 6 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:19,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 489 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:11:19,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2024-11-08 18:11:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4047. [2024-11-08 18:11:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 3010 states have (on average 1.3069767441860465) internal successors, (3934), 3054 states have internal predecessors, (3934), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-08 18:11:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5278 transitions. [2024-11-08 18:11:19,696 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5278 transitions. Word has length 103 [2024-11-08 18:11:19,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:19,697 INFO L471 AbstractCegarLoop]: Abstraction has 4047 states and 5278 transitions. [2024-11-08 18:11:19,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5278 transitions. [2024-11-08 18:11:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 18:11:19,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:19,701 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:19,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 18:11:19,701 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:19,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1999625950, now seen corresponding path program 1 times [2024-11-08 18:11:19,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:19,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579643141] [2024-11-08 18:11:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:19,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 18:11:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-08 18:11:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 18:11:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-08 18:11:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 18:11:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 18:11:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:11:19,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:19,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579643141] [2024-11-08 18:11:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579643141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:19,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:19,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384747377] [2024-11-08 18:11:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:19,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:19,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:19,927 INFO L87 Difference]: Start difference. First operand 4047 states and 5278 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:20,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:20,495 INFO L93 Difference]: Finished difference Result 7725 states and 10101 transitions. [2024-11-08 18:11:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:11:20,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-08 18:11:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:20,527 INFO L225 Difference]: With dead ends: 7725 [2024-11-08 18:11:20,528 INFO L226 Difference]: Without dead ends: 3755 [2024-11-08 18:11:20,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:20,539 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 83 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:20,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 752 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:20,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2024-11-08 18:11:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3692. [2024-11-08 18:11:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 2738 states have (on average 1.3170197224251279) internal successors, (3606), 2772 states have internal predecessors, (3606), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-08 18:11:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4846 transitions. [2024-11-08 18:11:21,209 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4846 transitions. Word has length 104 [2024-11-08 18:11:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:21,209 INFO L471 AbstractCegarLoop]: Abstraction has 3692 states and 4846 transitions. [2024-11-08 18:11:21,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:21,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4846 transitions. [2024-11-08 18:11:21,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 18:11:21,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:21,213 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:21,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 18:11:21,214 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:21,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:21,214 INFO L85 PathProgramCache]: Analyzing trace with hash -825783750, now seen corresponding path program 1 times [2024-11-08 18:11:21,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:21,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144724353] [2024-11-08 18:11:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:21,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:21,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:21,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 18:11:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:21,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-08 18:11:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:21,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-08 18:11:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:21,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 18:11:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:21,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 18:11:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:21,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-08 18:11:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:21,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 18:11:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:11:21,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:21,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144724353] [2024-11-08 18:11:21,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144724353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:21,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:21,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:11:21,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231735909] [2024-11-08 18:11:21,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:21,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:11:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:11:21,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:11:21,375 INFO L87 Difference]: Start difference. First operand 3692 states and 4846 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:22,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:22,174 INFO L93 Difference]: Finished difference Result 7253 states and 9561 transitions. [2024-11-08 18:11:22,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:11:22,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-11-08 18:11:22,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:22,202 INFO L225 Difference]: With dead ends: 7253 [2024-11-08 18:11:22,202 INFO L226 Difference]: Without dead ends: 3743 [2024-11-08 18:11:22,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:11:22,213 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 6 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:22,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 489 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:11:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2024-11-08 18:11:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3702. [2024-11-08 18:11:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 2748 states have (on average 1.3158660844250365) internal successors, (3616), 2782 states have internal predecessors, (3616), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-08 18:11:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 4856 transitions. [2024-11-08 18:11:22,734 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 4856 transitions. Word has length 105 [2024-11-08 18:11:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:22,735 INFO L471 AbstractCegarLoop]: Abstraction has 3702 states and 4856 transitions. [2024-11-08 18:11:22,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 4856 transitions. [2024-11-08 18:11:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 18:11:22,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:22,737 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:22,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 18:11:22,738 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:22,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:22,738 INFO L85 PathProgramCache]: Analyzing trace with hash -771422177, now seen corresponding path program 1 times [2024-11-08 18:11:22,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:22,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648049768] [2024-11-08 18:11:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:22,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:22,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:22,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 18:11:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:22,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-08 18:11:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:22,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-08 18:11:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:22,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 18:11:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:22,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 18:11:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:22,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-08 18:11:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:22,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 18:11:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:11:22,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:22,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648049768] [2024-11-08 18:11:22,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648049768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:22,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:22,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:11:22,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073871398] [2024-11-08 18:11:22,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:22,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:11:22,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:22,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:11:22,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:11:22,936 INFO L87 Difference]: Start difference. First operand 3702 states and 4856 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:23,391 INFO L93 Difference]: Finished difference Result 7204 states and 9472 transitions. [2024-11-08 18:11:23,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:11:23,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-11-08 18:11:23,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:23,417 INFO L225 Difference]: With dead ends: 7204 [2024-11-08 18:11:23,417 INFO L226 Difference]: Without dead ends: 3622 [2024-11-08 18:11:23,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:11:23,429 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 64 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:23,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 762 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2024-11-08 18:11:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 2788. [2024-11-08 18:11:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2068 states have (on average 1.3109284332688589) internal successors, (2711), 2087 states have internal predecessors, (2711), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2024-11-08 18:11:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3649 transitions. [2024-11-08 18:11:23,916 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3649 transitions. Word has length 105 [2024-11-08 18:11:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:23,917 INFO L471 AbstractCegarLoop]: Abstraction has 2788 states and 3649 transitions. [2024-11-08 18:11:23,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 18:11:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3649 transitions. [2024-11-08 18:11:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-08 18:11:23,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:23,924 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2024-11-08 18:11:23,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-08 18:11:23,925 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:23,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash -324487762, now seen corresponding path program 1 times [2024-11-08 18:11:23,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:23,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746050992] [2024-11-08 18:11:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:23,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 18:11:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-08 18:11:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 18:11:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 18:11:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 18:11:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 18:11:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-08 18:11:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-08 18:11:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-08 18:11:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 18:11:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-08 18:11:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-11-08 18:11:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-11-08 18:11:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-08 18:11:24,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:24,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746050992] [2024-11-08 18:11:24,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746050992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:11:24,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672299591] [2024-11-08 18:11:24,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:24,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:24,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:24,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:11:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:11:24,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:11:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 18:11:24,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:11:24,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672299591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:24,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:11:24,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-08 18:11:24,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934437515] [2024-11-08 18:11:24,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:24,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:11:24,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:11:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:11:24,948 INFO L87 Difference]: Start difference. First operand 2788 states and 3649 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-08 18:11:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:25,397 INFO L93 Difference]: Finished difference Result 5245 states and 6907 transitions. [2024-11-08 18:11:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:11:25,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 156 [2024-11-08 18:11:25,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:25,416 INFO L225 Difference]: With dead ends: 5245 [2024-11-08 18:11:25,417 INFO L226 Difference]: Without dead ends: 2617 [2024-11-08 18:11:25,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:11:25,459 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:25,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1028 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:11:25,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2024-11-08 18:11:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2600. [2024-11-08 18:11:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 1925 states have (on average 1.3075324675324675) internal successors, (2517), 1942 states have internal predecessors, (2517), 440 states have call successors, (440), 234 states have call predecessors, (440), 234 states have return successors, (440), 423 states have call predecessors, (440), 440 states have call successors, (440) [2024-11-08 18:11:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3397 transitions. [2024-11-08 18:11:25,869 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3397 transitions. Word has length 156 [2024-11-08 18:11:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:25,869 INFO L471 AbstractCegarLoop]: Abstraction has 2600 states and 3397 transitions. [2024-11-08 18:11:25,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-08 18:11:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3397 transitions. [2024-11-08 18:11:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-08 18:11:25,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:25,876 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2024-11-08 18:11:25,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:11:26,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:26,081 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:26,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash 617738010, now seen corresponding path program 1 times [2024-11-08 18:11:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41749892] [2024-11-08 18:11:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:11:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 18:11:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-08 18:11:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 18:11:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-08 18:11:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 18:11:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 18:11:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-11-08 18:11:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-11-08 18:11:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-08 18:11:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-08 18:11:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 18:11:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-11-08 18:11:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-08 18:11:27,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:27,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41749892] [2024-11-08 18:11:27,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41749892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:11:27,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634556247] [2024-11-08 18:11:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:27,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:27,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:27,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:11:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:27,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 18:11:27,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:11:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:11:28,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:11:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-08 18:11:29,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634556247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:11:29,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:11:29,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 23 [2024-11-08 18:11:29,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320715020] [2024-11-08 18:11:29,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:11:29,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:11:29,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:11:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:11:29,067 INFO L87 Difference]: Start difference. First operand 2600 states and 3397 transitions. Second operand has 23 states, 23 states have (on average 10.608695652173912) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (40), 4 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 8 states have call successors, (39) [2024-11-08 18:11:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:32,382 INFO L93 Difference]: Finished difference Result 7348 states and 9640 transitions. [2024-11-08 18:11:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 18:11:32,383 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.608695652173912) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (40), 4 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 8 states have call successors, (39) Word has length 158 [2024-11-08 18:11:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:32,412 INFO L225 Difference]: With dead ends: 7348 [2024-11-08 18:11:32,412 INFO L226 Difference]: Without dead ends: 4979 [2024-11-08 18:11:32,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=360, Invalid=1532, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 18:11:32,423 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1696 mSDsluCounter, 3558 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 3981 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:32,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 3981 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 18:11:32,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2024-11-08 18:11:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4453. [2024-11-08 18:11:33,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4453 states, 3297 states have (on average 1.310888686684865) internal successors, (4322), 3325 states have internal predecessors, (4322), 751 states have call successors, (751), 404 states have call predecessors, (751), 404 states have return successors, (751), 723 states have call predecessors, (751), 751 states have call successors, (751) [2024-11-08 18:11:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 5824 transitions. [2024-11-08 18:11:33,218 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 5824 transitions. Word has length 158 [2024-11-08 18:11:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:33,218 INFO L471 AbstractCegarLoop]: Abstraction has 4453 states and 5824 transitions. [2024-11-08 18:11:33,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.608695652173912) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (40), 4 states have call predecessors, (40), 8 states have return successors, (39), 11 states have call predecessors, (39), 8 states have call successors, (39) [2024-11-08 18:11:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 5824 transitions. [2024-11-08 18:11:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-08 18:11:33,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:33,229 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:33,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:11:33,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 18:11:33,433 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:33,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash 106034656, now seen corresponding path program 1 times [2024-11-08 18:11:33,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:33,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243997222] [2024-11-08 18:11:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:33,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:11:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 18:11:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 18:11:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 18:11:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 18:11:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 18:11:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 18:11:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-08 18:11:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-08 18:11:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-08 18:11:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-08 18:11:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-11-08 18:11:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-08 18:11:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 18:11:34,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243997222] [2024-11-08 18:11:34,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243997222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:11:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858218836] [2024-11-08 18:11:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:34,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:34,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:34,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:34,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:11:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:34,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 18:11:34,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:11:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:11:36,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:11:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-08 18:11:37,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858218836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:11:37,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:11:37,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 27 [2024-11-08 18:11:37,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857111929] [2024-11-08 18:11:37,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:11:37,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 18:11:37,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:37,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 18:11:37,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2024-11-08 18:11:37,313 INFO L87 Difference]: Start difference. First operand 4453 states and 5824 transitions. Second operand has 27 states, 26 states have (on average 9.923076923076923) internal successors, (258), 25 states have internal predecessors, (258), 9 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-08 18:11:45,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:45,126 INFO L93 Difference]: Finished difference Result 14205 states and 18442 transitions. [2024-11-08 18:11:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-08 18:11:45,127 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 9.923076923076923) internal successors, (258), 25 states have internal predecessors, (258), 9 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) Word has length 159 [2024-11-08 18:11:45,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:45,187 INFO L225 Difference]: With dead ends: 14205 [2024-11-08 18:11:45,188 INFO L226 Difference]: Without dead ends: 9972 [2024-11-08 18:11:45,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1533, Invalid=7023, Unknown=0, NotChecked=0, Total=8556 [2024-11-08 18:11:45,207 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 2871 mSDsluCounter, 4081 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 1109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2875 SdHoareTripleChecker+Valid, 4409 SdHoareTripleChecker+Invalid, 3235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1109 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:45,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2875 Valid, 4409 Invalid, 3235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1109 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 18:11:45,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9972 states. [2024-11-08 18:11:46,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9972 to 6919. [2024-11-08 18:11:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6919 states, 5093 states have (on average 1.3021794620066758) internal successors, (6632), 5142 states have internal predecessors, (6632), 1170 states have call successors, (1170), 655 states have call predecessors, (1170), 655 states have return successors, (1170), 1121 states have call predecessors, (1170), 1170 states have call successors, (1170) [2024-11-08 18:11:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6919 states to 6919 states and 8972 transitions. [2024-11-08 18:11:46,673 INFO L78 Accepts]: Start accepts. Automaton has 6919 states and 8972 transitions. Word has length 159 [2024-11-08 18:11:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:46,674 INFO L471 AbstractCegarLoop]: Abstraction has 6919 states and 8972 transitions. [2024-11-08 18:11:46,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 9.923076923076923) internal successors, (258), 25 states have internal predecessors, (258), 9 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-08 18:11:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 6919 states and 8972 transitions. [2024-11-08 18:11:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-08 18:11:46,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:46,686 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2024-11-08 18:11:46,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:11:46,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:46,887 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:46,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1712224553, now seen corresponding path program 1 times [2024-11-08 18:11:46,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:46,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787251040] [2024-11-08 18:11:46,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:46,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:11:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 18:11:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 18:11:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 18:11:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 18:11:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 18:11:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 18:11:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 18:11:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-08 18:11:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-08 18:11:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-08 18:11:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-08 18:11:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-08 18:11:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-08 18:11:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 18:11:47,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787251040] [2024-11-08 18:11:47,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787251040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:11:47,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:11:47,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 18:11:47,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276461884] [2024-11-08 18:11:47,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:11:47,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:11:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:11:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:11:47,296 INFO L87 Difference]: Start difference. First operand 6919 states and 8972 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-08 18:11:50,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:50,226 INFO L93 Difference]: Finished difference Result 20353 states and 26472 transitions. [2024-11-08 18:11:50,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:11:50,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 169 [2024-11-08 18:11:50,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:50,287 INFO L225 Difference]: With dead ends: 20353 [2024-11-08 18:11:50,288 INFO L226 Difference]: Without dead ends: 13754 [2024-11-08 18:11:50,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:11:50,304 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 225 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:50,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2590 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:11:50,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13754 states. [2024-11-08 18:11:52,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13754 to 9403. [2024-11-08 18:11:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9403 states, 6881 states have (on average 1.3011190233977619) internal successors, (8953), 6948 states have internal predecessors, (8953), 1634 states have call successors, (1634), 887 states have call predecessors, (1634), 887 states have return successors, (1634), 1567 states have call predecessors, (1634), 1634 states have call successors, (1634) [2024-11-08 18:11:52,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9403 states to 9403 states and 12221 transitions. [2024-11-08 18:11:52,326 INFO L78 Accepts]: Start accepts. Automaton has 9403 states and 12221 transitions. Word has length 169 [2024-11-08 18:11:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:52,327 INFO L471 AbstractCegarLoop]: Abstraction has 9403 states and 12221 transitions. [2024-11-08 18:11:52,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-08 18:11:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9403 states and 12221 transitions. [2024-11-08 18:11:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-08 18:11:52,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:52,349 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:52,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-08 18:11:52,349 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:52,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:52,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2120578515, now seen corresponding path program 1 times [2024-11-08 18:11:52,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:52,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495182465] [2024-11-08 18:11:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:52,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:11:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 18:11:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:11:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 18:11:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-08 18:11:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 18:11:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-08 18:11:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-08 18:11:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 18:11:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-08 18:11:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-11-08 18:11:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-08 18:11:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-11-08 18:11:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-08 18:11:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-08 18:11:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-08 18:11:54,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:54,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495182465] [2024-11-08 18:11:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495182465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:11:54,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016671843] [2024-11-08 18:11:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:54,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:54,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:54,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:54,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:11:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:54,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 18:11:54,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:11:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-08 18:11:54,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:11:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 18:11:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016671843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:11:54,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:11:54,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2024-11-08 18:11:54,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699300793] [2024-11-08 18:11:54,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:11:54,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 18:11:54,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 18:11:54,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:11:54,989 INFO L87 Difference]: Start difference. First operand 9403 states and 12221 transitions. Second operand has 16 states, 16 states have (on average 12.9375) internal successors, (207), 15 states have internal predecessors, (207), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-08 18:11:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:59,464 INFO L93 Difference]: Finished difference Result 19616 states and 25487 transitions. [2024-11-08 18:11:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:11:59,465 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.9375) internal successors, (207), 15 states have internal predecessors, (207), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 169 [2024-11-08 18:11:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:59,524 INFO L225 Difference]: With dead ends: 19616 [2024-11-08 18:11:59,524 INFO L226 Difference]: Without dead ends: 10428 [2024-11-08 18:11:59,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=270, Invalid=1536, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 18:11:59,545 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 840 mSDsluCounter, 4420 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:59,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 4899 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 18:11:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10428 states. [2024-11-08 18:12:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10428 to 9888. [2024-11-08 18:12:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9888 states, 7242 states have (on average 1.3003314001657) internal successors, (9417), 7313 states have internal predecessors, (9417), 1714 states have call successors, (1714), 931 states have call predecessors, (1714), 931 states have return successors, (1714), 1643 states have call predecessors, (1714), 1714 states have call successors, (1714) [2024-11-08 18:12:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9888 states to 9888 states and 12845 transitions. [2024-11-08 18:12:01,744 INFO L78 Accepts]: Start accepts. Automaton has 9888 states and 12845 transitions. Word has length 169 [2024-11-08 18:12:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:01,745 INFO L471 AbstractCegarLoop]: Abstraction has 9888 states and 12845 transitions. [2024-11-08 18:12:01,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.9375) internal successors, (207), 15 states have internal predecessors, (207), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-08 18:12:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 9888 states and 12845 transitions. [2024-11-08 18:12:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-08 18:12:01,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:01,762 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:01,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:12:01,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-08 18:12:01,968 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:01,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:01,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1147635930, now seen corresponding path program 1 times [2024-11-08 18:12:01,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391735119] [2024-11-08 18:12:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:01,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:02,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:12:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 18:12:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:12:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 18:12:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-08 18:12:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 18:12:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-08 18:12:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-08 18:12:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-08 18:12:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-11-08 18:12:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-08 18:12:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-11-08 18:12:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-11-08 18:12:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-08 18:12:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-08 18:12:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-08 18:12:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-08 18:12:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391735119] [2024-11-08 18:12:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391735119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:03,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104982928] [2024-11-08 18:12:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:03,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:03,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:03,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:03,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:12:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:03,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 18:12:03,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 18:12:04,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-08 18:12:04,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104982928] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:04,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:04,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2024-11-08 18:12:04,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375074888] [2024-11-08 18:12:04,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:04,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:12:04,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:12:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:12:04,957 INFO L87 Difference]: Start difference. First operand 9888 states and 12845 transitions. Second operand has 17 states, 17 states have (on average 13.470588235294118) internal successors, (229), 17 states have internal predecessors, (229), 7 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2024-11-08 18:12:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:10,235 INFO L93 Difference]: Finished difference Result 25427 states and 33121 transitions. [2024-11-08 18:12:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:12:10,235 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.470588235294118) internal successors, (229), 17 states have internal predecessors, (229), 7 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 178 [2024-11-08 18:12:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:10,310 INFO L225 Difference]: With dead ends: 25427 [2024-11-08 18:12:10,310 INFO L226 Difference]: Without dead ends: 15779 [2024-11-08 18:12:10,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:12:10,336 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 2190 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:10,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2190 Valid, 2569 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 18:12:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15779 states. [2024-11-08 18:12:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15779 to 14544. [2024-11-08 18:12:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14544 states, 10628 states have (on average 1.3009973654497553) internal successors, (13827), 10739 states have internal predecessors, (13827), 2538 states have call successors, (2538), 1377 states have call predecessors, (2538), 1377 states have return successors, (2538), 2427 states have call predecessors, (2538), 2538 states have call successors, (2538) [2024-11-08 18:12:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14544 states to 14544 states and 18903 transitions. [2024-11-08 18:12:13,394 INFO L78 Accepts]: Start accepts. Automaton has 14544 states and 18903 transitions. Word has length 178 [2024-11-08 18:12:13,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:13,394 INFO L471 AbstractCegarLoop]: Abstraction has 14544 states and 18903 transitions. [2024-11-08 18:12:13,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.470588235294118) internal successors, (229), 17 states have internal predecessors, (229), 7 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2024-11-08 18:12:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 14544 states and 18903 transitions. [2024-11-08 18:12:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-08 18:12:13,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:13,412 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2024-11-08 18:12:13,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:12:13,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:13,613 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:13,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:13,613 INFO L85 PathProgramCache]: Analyzing trace with hash -673319074, now seen corresponding path program 1 times [2024-11-08 18:12:13,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:13,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912410559] [2024-11-08 18:12:13,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:13,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:12:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:12:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 18:12:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 18:12:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 18:12:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 18:12:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 18:12:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 18:12:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 18:12:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-08 18:12:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-08 18:12:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 18:12:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-11-08 18:12:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-08 18:12:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-08 18:12:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-08 18:12:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-08 18:12:14,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912410559] [2024-11-08 18:12:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912410559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20423495] [2024-11-08 18:12:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:14,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:14,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:14,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:14,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:12:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:14,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 18:12:14,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 65 proven. 25 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 18:12:15,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-08 18:12:16,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20423495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:16,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:16,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 23 [2024-11-08 18:12:16,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486557784] [2024-11-08 18:12:16,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:16,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:12:16,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:12:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:12:16,213 INFO L87 Difference]: Start difference. First operand 14544 states and 18903 transitions. Second operand has 23 states, 23 states have (on average 12.565217391304348) internal successors, (289), 22 states have internal predecessors, (289), 9 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (44), 10 states have call predecessors, (44), 9 states have call successors, (44) [2024-11-08 18:12:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:26,668 INFO L93 Difference]: Finished difference Result 36720 states and 47930 transitions. [2024-11-08 18:12:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-08 18:12:26,669 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.565217391304348) internal successors, (289), 22 states have internal predecessors, (289), 9 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (44), 10 states have call predecessors, (44), 9 states have call successors, (44) Word has length 179 [2024-11-08 18:12:26,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:26,777 INFO L225 Difference]: With dead ends: 36720 [2024-11-08 18:12:26,777 INFO L226 Difference]: Without dead ends: 22458 [2024-11-08 18:12:26,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7828 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2714, Invalid=18456, Unknown=0, NotChecked=0, Total=21170 [2024-11-08 18:12:26,817 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 2905 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2905 SdHoareTripleChecker+Valid, 4146 SdHoareTripleChecker+Invalid, 3036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:26,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2905 Valid, 4146 Invalid, 3036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [905 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 18:12:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22458 states. [2024-11-08 18:12:31,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22458 to 21153. [2024-11-08 18:12:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21153 states, 15542 states have (on average 1.3035645348089049) internal successors, (20260), 15698 states have internal predecessors, (20260), 3622 states have call successors, (3622), 1988 states have call predecessors, (3622), 1988 states have return successors, (3622), 3466 states have call predecessors, (3622), 3622 states have call successors, (3622) [2024-11-08 18:12:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21153 states to 21153 states and 27504 transitions. [2024-11-08 18:12:31,819 INFO L78 Accepts]: Start accepts. Automaton has 21153 states and 27504 transitions. Word has length 179 [2024-11-08 18:12:31,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:31,820 INFO L471 AbstractCegarLoop]: Abstraction has 21153 states and 27504 transitions. [2024-11-08 18:12:31,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.565217391304348) internal successors, (289), 22 states have internal predecessors, (289), 9 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (44), 10 states have call predecessors, (44), 9 states have call successors, (44) [2024-11-08 18:12:31,820 INFO L276 IsEmpty]: Start isEmpty. Operand 21153 states and 27504 transitions. [2024-11-08 18:12:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-08 18:12:31,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:31,838 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2024-11-08 18:12:31,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:12:32,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:32,039 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:32,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1934594215, now seen corresponding path program 1 times [2024-11-08 18:12:32,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:32,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754275226] [2024-11-08 18:12:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:32,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:12:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 18:12:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 18:12:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 18:12:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 18:12:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 18:12:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 18:12:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 18:12:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 18:12:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-11-08 18:12:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-08 18:12:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-11-08 18:12:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-11-08 18:12:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-11-08 18:12:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-08 18:12:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-11-08 18:12:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-08 18:12:33,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:33,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754275226] [2024-11-08 18:12:33,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754275226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256953107] [2024-11-08 18:12:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:33,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:33,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:33,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:33,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:12:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:33,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 18:12:33,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 18:12:34,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-08 18:12:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256953107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:34,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:34,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 9] total 25 [2024-11-08 18:12:34,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809775439] [2024-11-08 18:12:34,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:34,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 18:12:34,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 18:12:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:12:34,436 INFO L87 Difference]: Start difference. First operand 21153 states and 27504 transitions. Second operand has 25 states, 25 states have (on average 9.48) internal successors, (237), 21 states have internal predecessors, (237), 7 states have call successors, (38), 4 states have call predecessors, (38), 9 states have return successors, (40), 11 states have call predecessors, (40), 7 states have call successors, (40) [2024-11-08 18:12:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:47,940 INFO L93 Difference]: Finished difference Result 57461 states and 76360 transitions. [2024-11-08 18:12:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 18:12:47,941 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.48) internal successors, (237), 21 states have internal predecessors, (237), 7 states have call successors, (38), 4 states have call predecessors, (38), 9 states have return successors, (40), 11 states have call predecessors, (40), 7 states have call successors, (40) Word has length 179 [2024-11-08 18:12:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:48,106 INFO L225 Difference]: With dead ends: 57461 [2024-11-08 18:12:48,106 INFO L226 Difference]: Without dead ends: 36223 [2024-11-08 18:12:48,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=508, Invalid=3152, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 18:12:48,155 INFO L432 NwaCegarLoop]: 517 mSDtfsCounter, 1729 mSDsluCounter, 6165 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 6682 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:48,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 6682 Invalid, 3161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [704 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 18:12:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36223 states. [2024-11-08 18:12:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36223 to 25443. [2024-11-08 18:12:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25443 states, 18617 states have (on average 1.2965569103507546) internal successors, (24138), 18818 states have internal predecessors, (24138), 4402 states have call successors, (4402), 2423 states have call predecessors, (4402), 2423 states have return successors, (4402), 4201 states have call predecessors, (4402), 4402 states have call successors, (4402) [2024-11-08 18:12:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25443 states to 25443 states and 32942 transitions. [2024-11-08 18:12:56,466 INFO L78 Accepts]: Start accepts. Automaton has 25443 states and 32942 transitions. Word has length 179 [2024-11-08 18:12:56,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:56,467 INFO L471 AbstractCegarLoop]: Abstraction has 25443 states and 32942 transitions. [2024-11-08 18:12:56,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.48) internal successors, (237), 21 states have internal predecessors, (237), 7 states have call successors, (38), 4 states have call predecessors, (38), 9 states have return successors, (40), 11 states have call predecessors, (40), 7 states have call successors, (40) [2024-11-08 18:12:56,467 INFO L276 IsEmpty]: Start isEmpty. Operand 25443 states and 32942 transitions. [2024-11-08 18:12:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-08 18:12:56,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:56,491 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:56,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:12:56,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 18:12:56,692 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:56,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash -476491344, now seen corresponding path program 1 times [2024-11-08 18:12:56,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:56,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298132383] [2024-11-08 18:12:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:12:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 18:12:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:12:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 18:12:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-08 18:12:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 18:12:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 18:12:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 18:12:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 18:12:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-08 18:12:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-08 18:12:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-08 18:12:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-08 18:12:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-08 18:12:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-08 18:12:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-08 18:12:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-11-08 18:12:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-08 18:12:57,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298132383] [2024-11-08 18:12:57,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298132383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212261434] [2024-11-08 18:12:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:57,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:57,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:57,603 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:57,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:12:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:57,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 18:12:57,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 77 proven. 14 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 18:12:58,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-08 18:12:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212261434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:59,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:59,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2024-11-08 18:12:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341806022] [2024-11-08 18:12:59,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:59,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:12:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:12:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:12:59,508 INFO L87 Difference]: Start difference. First operand 25443 states and 32942 transitions. Second operand has 21 states, 21 states have (on average 12.428571428571429) internal successors, (261), 20 states have internal predecessors, (261), 8 states have call successors, (36), 5 states have call predecessors, (36), 6 states have return successors, (36), 9 states have call predecessors, (36), 8 states have call successors, (36) [2024-11-08 18:13:11,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:13:11,122 INFO L93 Difference]: Finished difference Result 57393 states and 74405 transitions. [2024-11-08 18:13:11,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 18:13:11,123 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.428571428571429) internal successors, (261), 20 states have internal predecessors, (261), 8 states have call successors, (36), 5 states have call predecessors, (36), 6 states have return successors, (36), 9 states have call predecessors, (36), 8 states have call successors, (36) Word has length 186 [2024-11-08 18:13:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:13:11,267 INFO L225 Difference]: With dead ends: 57393 [2024-11-08 18:13:11,267 INFO L226 Difference]: Without dead ends: 32270 [2024-11-08 18:13:11,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 400 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=394, Invalid=1498, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 18:13:11,327 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 1632 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 3199 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:13:11,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 3199 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 18:13:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32270 states. [2024-11-08 18:13:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32270 to 31932. [2024-11-08 18:13:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31932 states, 23365 states have (on average 1.2964262786218703) internal successors, (30291), 23618 states have internal predecessors, (30291), 5527 states have call successors, (5527), 3039 states have call predecessors, (5527), 3039 states have return successors, (5527), 5274 states have call predecessors, (5527), 5527 states have call successors, (5527) [2024-11-08 18:13:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31932 states to 31932 states and 41345 transitions. [2024-11-08 18:13:19,820 INFO L78 Accepts]: Start accepts. Automaton has 31932 states and 41345 transitions. Word has length 186 [2024-11-08 18:13:19,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:13:19,821 INFO L471 AbstractCegarLoop]: Abstraction has 31932 states and 41345 transitions. [2024-11-08 18:13:19,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.428571428571429) internal successors, (261), 20 states have internal predecessors, (261), 8 states have call successors, (36), 5 states have call predecessors, (36), 6 states have return successors, (36), 9 states have call predecessors, (36), 8 states have call successors, (36) [2024-11-08 18:13:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 31932 states and 41345 transitions. [2024-11-08 18:13:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-08 18:13:19,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:13:19,834 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:13:19,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 18:13:20,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 18:13:20,038 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:13:20,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:13:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1721687558, now seen corresponding path program 1 times [2024-11-08 18:13:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:13:20,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646632129] [2024-11-08 18:13:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:13:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 18:13:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 18:13:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 18:13:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 18:13:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-08 18:13:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 18:13:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 18:13:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 18:13:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 18:13:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-08 18:13:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-08 18:13:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-11-08 18:13:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-08 18:13:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-08 18:13:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-11-08 18:13:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-11-08 18:13:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-11-08 18:13:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-08 18:13:21,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:21,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646632129] [2024-11-08 18:13:21,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646632129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:13:21,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281819664] [2024-11-08 18:13:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:13:21,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:13:21,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:13:21,512 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:13:21,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2dbae0cd-ce8a-41ff-aca3-e8b406b9a79a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:13:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:21,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 18:13:21,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:13:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 79 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 18:13:22,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:13:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-08 18:13:23,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281819664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:13:23,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:13:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 24 [2024-11-08 18:13:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056872129] [2024-11-08 18:13:23,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:13:23,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 18:13:23,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:13:23,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 18:13:23,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:13:23,864 INFO L87 Difference]: Start difference. First operand 31932 states and 41345 transitions. Second operand has 24 states, 24 states have (on average 9.833333333333334) internal successors, (236), 24 states have internal predecessors, (236), 7 states have call successors, (36), 5 states have call predecessors, (36), 6 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35)