./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem15_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem15_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme --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 4c52ec07a463523a7400028d070720f187a378d4cbca4c6c694254a0e1ef7e72 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:06:26,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:06:26,499 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:06:26,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:06:26,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:06:26,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:06:26,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:06:26,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:06:26,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:06:26,564 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:06:26,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:06:26,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:06:26,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:06:26,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:06:26,568 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:06:26,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:06:26,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:06:26,570 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:06:26,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:06:26,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:06:26,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:06:26,571 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:06:26,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:06:26,572 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:06:26,573 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:06:26,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:06:26,574 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:06:26,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:06:26,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:06:26,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:06:26,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:06:26,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:26,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:06:26,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:06:26,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:06:26,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:06:26,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:06:26,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:06:26,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:06:26,578 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:06:26,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:06:26,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:06:26,579 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_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c52ec07a463523a7400028d070720f187a378d4cbca4c6c694254a0e1ef7e72 [2023-11-26 12:06:26,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:06:26,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:06:26,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:06:26,961 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:06:26,962 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:06:26,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/eca-rers2012/Problem15_label54.c [2023-11-26 12:06:30,219 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:06:30,660 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:06:30,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/sv-benchmarks/c/eca-rers2012/Problem15_label54.c [2023-11-26 12:06:30,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/data/95a562f2b/5a5f54afe17b46ee8ac655420c9c2383/FLAG6605c6ac4 [2023-11-26 12:06:30,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/data/95a562f2b/5a5f54afe17b46ee8ac655420c9c2383 [2023-11-26 12:06:30,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:06:30,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:06:30,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:30,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:06:30,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:06:30,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:30" (1/1) ... [2023-11-26 12:06:30,714 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f47a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:30, skipping insertion in model container [2023-11-26 12:06:30,714 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:30" (1/1) ... [2023-11-26 12:06:30,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:06:31,060 WARN L240 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_f7fbd965-81b1-4b6e-a641-cf3872cc013b/sv-benchmarks/c/eca-rers2012/Problem15_label54.c[4982,4995] [2023-11-26 12:06:31,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:31,677 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:06:31,716 WARN L240 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_f7fbd965-81b1-4b6e-a641-cf3872cc013b/sv-benchmarks/c/eca-rers2012/Problem15_label54.c[4982,4995] [2023-11-26 12:06:31,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:32,017 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:06:32,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32 WrapperNode [2023-11-26 12:06:32,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:32,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:32,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:06:32,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:06:32,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,395 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1759 [2023-11-26 12:06:32,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:32,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:06:32,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:06:32,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:06:32,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,538 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]. [2023-11-26 12:06:32,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,638 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:06:32,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:06:32,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:06:32,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:06:32,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (1/1) ... [2023-11-26 12:06:32,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:06:32,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:32,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:06:32,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:06:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:06:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:06:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:06:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:06:32,973 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:06:32,976 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:06:36,228 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:06:36,303 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:06:36,305 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:06:36,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:36 BoogieIcfgContainer [2023-11-26 12:06:36,306 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:06:36,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:06:36,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:06:36,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:06:36,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:06:30" (1/3) ... [2023-11-26 12:06:36,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657df711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:36, skipping insertion in model container [2023-11-26 12:06:36,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:32" (2/3) ... [2023-11-26 12:06:36,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657df711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:06:36, skipping insertion in model container [2023-11-26 12:06:36,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:36" (3/3) ... [2023-11-26 12:06:36,319 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label54.c [2023-11-26 12:06:36,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:06:36,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:06:36,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:06:36,423 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7cb26fae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:06:36,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:06:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 12:06:36,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:36,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:36,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:36,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:36,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1856460562, now seen corresponding path program 1 times [2023-11-26 12:06:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:36,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367212528] [2023-11-26 12:06:36,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:36,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:36,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367212528] [2023-11-26 12:06:36,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367212528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:36,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:36,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:36,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871349426] [2023-11-26 12:06:36,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:36,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:06:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:36,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:06:36,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:06:36,699 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:36,802 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2023-11-26 12:06:36,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:06:36,805 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 12:06:36,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:36,820 INFO L225 Difference]: With dead ends: 723 [2023-11-26 12:06:36,823 INFO L226 Difference]: Without dead ends: 360 [2023-11-26 12:06:36,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:06:36,839 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:36,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-26 12:06:36,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-11-26 12:06:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2023-11-26 12:06:36,943 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 39 [2023-11-26 12:06:36,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:36,944 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2023-11-26 12:06:36,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2023-11-26 12:06:36,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 12:06:36,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:36,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:36,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:06:36,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:36,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:36,948 INFO L85 PathProgramCache]: Analyzing trace with hash -151656584, now seen corresponding path program 1 times [2023-11-26 12:06:36,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:36,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699907531] [2023-11-26 12:06:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:36,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:37,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:37,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699907531] [2023-11-26 12:06:37,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699907531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:37,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:37,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714267519] [2023-11-26 12:06:37,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:37,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:37,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:37,114 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:40,379 INFO L93 Difference]: Finished difference Result 1046 states and 1824 transitions. [2023-11-26 12:06:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:40,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-26 12:06:40,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:40,395 INFO L225 Difference]: With dead ends: 1046 [2023-11-26 12:06:40,396 INFO L226 Difference]: Without dead ends: 687 [2023-11-26 12:06:40,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:40,400 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 297 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:40,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 193 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-26 12:06:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-26 12:06:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 679. [2023-11-26 12:06:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.6106194690265487) internal successors, (1092), 678 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1092 transitions. [2023-11-26 12:06:40,478 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1092 transitions. Word has length 39 [2023-11-26 12:06:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:40,479 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1092 transitions. [2023-11-26 12:06:40,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1092 transitions. [2023-11-26 12:06:40,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 12:06:40,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:40,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:06:40,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:40,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash 281799079, now seen corresponding path program 1 times [2023-11-26 12:06:40,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:40,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957827010] [2023-11-26 12:06:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:40,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:40,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957827010] [2023-11-26 12:06:40,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957827010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:40,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:40,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:40,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975370287] [2023-11-26 12:06:40,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:40,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:40,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:40,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:40,856 INFO L87 Difference]: Start difference. First operand 679 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:43,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:43,065 INFO L93 Difference]: Finished difference Result 1963 states and 3170 transitions. [2023-11-26 12:06:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:43,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-26 12:06:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:43,077 INFO L225 Difference]: With dead ends: 1963 [2023-11-26 12:06:43,077 INFO L226 Difference]: Without dead ends: 1285 [2023-11-26 12:06:43,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:43,087 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 282 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:43,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 358 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-26 12:06:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-11-26 12:06:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1280. [2023-11-26 12:06:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3956215793588742) internal successors, (1785), 1279 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1785 transitions. [2023-11-26 12:06:43,151 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1785 transitions. Word has length 107 [2023-11-26 12:06:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:43,155 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1785 transitions. [2023-11-26 12:06:43,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1785 transitions. [2023-11-26 12:06:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-26 12:06:43,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:43,176 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:43,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:06:43,176 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:43,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:43,180 INFO L85 PathProgramCache]: Analyzing trace with hash 10500755, now seen corresponding path program 1 times [2023-11-26 12:06:43,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:43,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353380337] [2023-11-26 12:06:43,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:43,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:43,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:43,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353380337] [2023-11-26 12:06:43,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353380337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:43,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:43,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:43,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544959005] [2023-11-26 12:06:43,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:43,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:43,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:43,669 INFO L87 Difference]: Start difference. First operand 1280 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:46,006 INFO L93 Difference]: Finished difference Result 2858 states and 3904 transitions. [2023-11-26 12:06:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:46,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-26 12:06:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:46,024 INFO L225 Difference]: With dead ends: 2858 [2023-11-26 12:06:46,025 INFO L226 Difference]: Without dead ends: 1579 [2023-11-26 12:06:46,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:46,039 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 225 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:46,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 357 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 12:06:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-11-26 12:06:46,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1579. [2023-11-26 12:06:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 1.3244613434727504) internal successors, (2090), 1578 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:46,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2090 transitions. [2023-11-26 12:06:46,093 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2090 transitions. Word has length 115 [2023-11-26 12:06:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:46,096 INFO L495 AbstractCegarLoop]: Abstraction has 1579 states and 2090 transitions. [2023-11-26 12:06:46,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2090 transitions. [2023-11-26 12:06:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-26 12:06:46,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:46,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:46,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:06:46,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:46,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:46,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1206745549, now seen corresponding path program 1 times [2023-11-26 12:06:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:46,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034584443] [2023-11-26 12:06:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 126 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:46,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:46,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034584443] [2023-11-26 12:06:46,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034584443] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:46,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842432864] [2023-11-26 12:06:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:46,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:46,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:46,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:06:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:46,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:46,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 12:06:47,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:47,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842432864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:47,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:47,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 12:06:47,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619896977] [2023-11-26 12:06:47,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:47,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:47,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:47,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:47,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:47,233 INFO L87 Difference]: Start difference. First operand 1579 states and 2090 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:50,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:50,019 INFO L93 Difference]: Finished difference Result 4060 states and 5548 transitions. [2023-11-26 12:06:50,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:50,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2023-11-26 12:06:50,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:50,037 INFO L225 Difference]: With dead ends: 4060 [2023-11-26 12:06:50,037 INFO L226 Difference]: Without dead ends: 2781 [2023-11-26 12:06:50,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:50,041 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 220 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:50,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 362 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-26 12:06:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2023-11-26 12:06:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2480. [2023-11-26 12:06:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2479 states have (on average 1.2501008471157724) internal successors, (3099), 2479 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3099 transitions. [2023-11-26 12:06:50,108 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3099 transitions. Word has length 206 [2023-11-26 12:06:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:50,110 INFO L495 AbstractCegarLoop]: Abstraction has 2480 states and 3099 transitions. [2023-11-26 12:06:50,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3099 transitions. [2023-11-26 12:06:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-11-26 12:06:50,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:50,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:50,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 12:06:50,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:50,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:50,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:50,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1709712164, now seen corresponding path program 1 times [2023-11-26 12:06:50,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:50,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006631638] [2023-11-26 12:06:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:50,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:51,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006631638] [2023-11-26 12:06:51,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006631638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:51,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777257661] [2023-11-26 12:06:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:51,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:51,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:51,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:51,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:06:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:52,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:52,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:52,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:52,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777257661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:52,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:52,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-26 12:06:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751097342] [2023-11-26 12:06:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:52,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:52,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:52,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:52,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:06:52,296 INFO L87 Difference]: Start difference. First operand 2480 states and 3099 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:54,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:54,755 INFO L93 Difference]: Finished difference Result 6156 states and 7870 transitions. [2023-11-26 12:06:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:54,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2023-11-26 12:06:54,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:54,780 INFO L225 Difference]: With dead ends: 6156 [2023-11-26 12:06:54,781 INFO L226 Difference]: Without dead ends: 3976 [2023-11-26 12:06:54,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:06:54,785 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 273 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:54,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 320 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 12:06:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2023-11-26 12:06:54,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3378. [2023-11-26 12:06:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 3377 states have (on average 1.2262363044122002) internal successors, (4141), 3377 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4141 transitions. [2023-11-26 12:06:54,872 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4141 transitions. Word has length 321 [2023-11-26 12:06:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:54,873 INFO L495 AbstractCegarLoop]: Abstraction has 3378 states and 4141 transitions. [2023-11-26 12:06:54,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4141 transitions. [2023-11-26 12:06:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-26 12:06:54,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:54,882 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:54,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 12:06:55,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 12:06:55,088 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:55,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash 585307573, now seen corresponding path program 1 times [2023-11-26 12:06:55,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:55,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930705582] [2023-11-26 12:06:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:55,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 75 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:56,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:56,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930705582] [2023-11-26 12:06:56,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930705582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221526248] [2023-11-26 12:06:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:56,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:56,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:56,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:56,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:06:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:57,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:57,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:57,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:57,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221526248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:57,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:57,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-26 12:06:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561845418] [2023-11-26 12:06:57,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:57,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:57,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:57,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:57,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:57,244 INFO L87 Difference]: Start difference. First operand 3378 states and 4141 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:59,685 INFO L93 Difference]: Finished difference Result 8262 states and 10363 transitions. [2023-11-26 12:06:59,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:59,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2023-11-26 12:06:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:59,712 INFO L225 Difference]: With dead ends: 8262 [2023-11-26 12:06:59,712 INFO L226 Difference]: Without dead ends: 5184 [2023-11-26 12:06:59,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:59,718 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 248 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:59,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 343 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 12:06:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2023-11-26 12:06:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4583. [2023-11-26 12:06:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4582 states have (on average 1.2082060235704932) internal successors, (5536), 4582 states have internal predecessors, (5536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:59,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 5536 transitions. [2023-11-26 12:06:59,829 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 5536 transitions. Word has length 385 [2023-11-26 12:06:59,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:59,830 INFO L495 AbstractCegarLoop]: Abstraction has 4583 states and 5536 transitions. [2023-11-26 12:06:59,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 5536 transitions. [2023-11-26 12:06:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-11-26 12:06:59,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:59,839 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:59,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 12:07:00,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:07:00,046 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:07:00,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:07:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash 379842947, now seen corresponding path program 1 times [2023-11-26 12:07:00,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:07:00,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228315735] [2023-11-26 12:07:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:07:00,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:07:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:07:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 277 proven. 39 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 12:07:00,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:07:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228315735] [2023-11-26 12:07:00,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228315735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:07:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295781757] [2023-11-26 12:07:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:07:00,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:07:00,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:07:00,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:07:00,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:07:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:07:01,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:07:01,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:07:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 12:07:02,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:07:02,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295781757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:07:02,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:07:02,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-26 12:07:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243090858] [2023-11-26 12:07:02,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:07:02,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:07:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:07:02,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:07:02,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:07:02,183 INFO L87 Difference]: Start difference. First operand 4583 states and 5536 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:07:04,828 INFO L93 Difference]: Finished difference Result 10064 states and 12074 transitions. [2023-11-26 12:07:04,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:07:04,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2023-11-26 12:07:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:07:04,854 INFO L225 Difference]: With dead ends: 10064 [2023-11-26 12:07:04,854 INFO L226 Difference]: Without dead ends: 5482 [2023-11-26 12:07:04,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:07:04,861 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 317 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:07:04,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 361 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-26 12:07:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2023-11-26 12:07:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5182. [2023-11-26 12:07:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5182 states, 5181 states have (on average 1.1887666473653735) internal successors, (6159), 5181 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5182 states to 5182 states and 6159 transitions. [2023-11-26 12:07:04,973 INFO L78 Accepts]: Start accepts. Automaton has 5182 states and 6159 transitions. Word has length 402 [2023-11-26 12:07:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:07:04,974 INFO L495 AbstractCegarLoop]: Abstraction has 5182 states and 6159 transitions. [2023-11-26 12:07:04,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5182 states and 6159 transitions. [2023-11-26 12:07:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-26 12:07:04,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:07:04,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:07:04,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 12:07:05,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fbd965-81b1-4b6e-a641-cf3872cc013b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:07:05,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:07:05,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:07:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash -76290361, now seen corresponding path program 1 times [2023-11-26 12:07:05,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:07:05,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043663119] [2023-11-26 12:07:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:07:05,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:07:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:07:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-26 12:07:05,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:07:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043663119] [2023-11-26 12:07:05,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043663119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:07:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:07:05,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:07:05,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28343214] [2023-11-26 12:07:05,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:07:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:07:05,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:07:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:07:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:07:05,772 INFO L87 Difference]: Start difference. First operand 5182 states and 6159 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:07,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:07:07,846 INFO L93 Difference]: Finished difference Result 12159 states and 14682 transitions. [2023-11-26 12:07:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:07:07,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 416 [2023-11-26 12:07:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:07:07,877 INFO L225 Difference]: With dead ends: 12159 [2023-11-26 12:07:07,877 INFO L226 Difference]: Without dead ends: 6978 [2023-11-26 12:07:07,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:07:07,884 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 288 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:07:07,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 614 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-26 12:07:07,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2023-11-26 12:07:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 6677. [2023-11-26 12:07:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6677 states, 6676 states have (on average 1.1661174355901738) internal successors, (7785), 6676 states have internal predecessors, (7785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6677 states to 6677 states and 7785 transitions. [2023-11-26 12:07:08,020 INFO L78 Accepts]: Start accepts. Automaton has 6677 states and 7785 transitions. Word has length 416 [2023-11-26 12:07:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:07:08,021 INFO L495 AbstractCegarLoop]: Abstraction has 6677 states and 7785 transitions. [2023-11-26 12:07:08,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:08,022 INFO L276 IsEmpty]: Start isEmpty. Operand 6677 states and 7785 transitions. [2023-11-26 12:07:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-11-26 12:07:08,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:07:08,038 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:07:08,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:07:08,038 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:07:08,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:07:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1716420367, now seen corresponding path program 1 times [2023-11-26 12:07:08,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:07:08,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432622264] [2023-11-26 12:07:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:07:08,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:07:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:07:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-11-26 12:07:08,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:07:08,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432622264] [2023-11-26 12:07:08,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432622264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:07:08,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:07:08,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:07:08,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657644268] [2023-11-26 12:07:08,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:07:08,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:07:08,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:07:08,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:07:08,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:07:08,644 INFO L87 Difference]: Start difference. First operand 6677 states and 7785 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:07:10,576 INFO L93 Difference]: Finished difference Result 13650 states and 15966 transitions. [2023-11-26 12:07:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:07:10,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 540 [2023-11-26 12:07:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:07:10,598 INFO L225 Difference]: With dead ends: 13650 [2023-11-26 12:07:10,599 INFO L226 Difference]: Without dead ends: 6974 [2023-11-26 12:07:10,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:07:10,607 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 465 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-26 12:07:10,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 70 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-26 12:07:10,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6974 states. [2023-11-26 12:07:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6974 to 6675. [2023-11-26 12:07:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6675 states, 6674 states have (on average 1.1658675456997303) internal successors, (7781), 6674 states have internal predecessors, (7781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6675 states to 6675 states and 7781 transitions. [2023-11-26 12:07:10,726 INFO L78 Accepts]: Start accepts. Automaton has 6675 states and 7781 transitions. Word has length 540 [2023-11-26 12:07:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:07:10,727 INFO L495 AbstractCegarLoop]: Abstraction has 6675 states and 7781 transitions. [2023-11-26 12:07:10,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 6675 states and 7781 transitions. [2023-11-26 12:07:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-11-26 12:07:10,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:07:10,737 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:07:10,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:07:10,737 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:07:10,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:07:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash -471132313, now seen corresponding path program 1 times [2023-11-26 12:07:10,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:07:10,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930161227] [2023-11-26 12:07:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:07:10,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:07:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:07:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 365 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-26 12:07:11,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:07:11,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930161227] [2023-11-26 12:07:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930161227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:07:11,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:07:11,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:07:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501163787] [2023-11-26 12:07:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:07:11,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:07:11,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:07:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:07:11,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:07:11,297 INFO L87 Difference]: Start difference. First operand 6675 states and 7781 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:07:12,951 INFO L93 Difference]: Finished difference Result 14843 states and 17245 transitions. [2023-11-26 12:07:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:07:12,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 556 [2023-11-26 12:07:12,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:07:12,968 INFO L225 Difference]: With dead ends: 14843 [2023-11-26 12:07:12,968 INFO L226 Difference]: Without dead ends: 7870 [2023-11-26 12:07:12,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:07:12,976 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 262 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:07:12,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 336 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 12:07:12,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7870 states. [2023-11-26 12:07:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7870 to 5176. [2023-11-26 12:07:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 1.1876328502415459) internal successors, (6146), 5175 states have internal predecessors, (6146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 6146 transitions. [2023-11-26 12:07:13,074 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 6146 transitions. Word has length 556 [2023-11-26 12:07:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:07:13,075 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 6146 transitions. [2023-11-26 12:07:13,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:07:13,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 6146 transitions. [2023-11-26 12:07:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2023-11-26 12:07:13,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:07:13,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:07:13,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:07:13,084 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:07:13,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:07:13,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1682344568, now seen corresponding path program 1 times [2023-11-26 12:07:13,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:07:13,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370506828] [2023-11-26 12:07:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:07:13,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:07:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:07:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-11-26 12:07:13,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:07:13,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370506828] [2023-11-26 12:07:13,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370506828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:07:13,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:07:13,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:07:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252979600] [2023-11-26 12:07:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:07:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:07:13,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:07:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:07:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:07:13,804 INFO L87 Difference]: Start difference. First operand 5176 states and 6146 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)