./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4aef2940f6d326843487f003443fc222e2136d386047f492f8bd5c7e21afc8f5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:04:18,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:04:18,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-24 23:04:18,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:04:18,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:04:18,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:04:18,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:04:18,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:04:18,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:04:18,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:04:18,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:04:18,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:04:18,298 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:04:18,298 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:04:18,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:04:18,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:04:18,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:04:18,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:04:18,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:04:18,302 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:04:18,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:04:18,303 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:04:18,304 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:04:18,306 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:04:18,306 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:04:18,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:04:18,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:04:18,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:04:18,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:04:18,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:04:18,310 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:04:18,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:04:18,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:04:18,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4aef2940f6d326843487f003443fc222e2136d386047f492f8bd5c7e21afc8f5 [2023-11-24 23:04:18,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:04:18,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:04:18,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:04:18,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:04:18,678 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:04:18,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c [2023-11-24 23:04:21,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:04:22,070 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:04:22,071 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c [2023-11-24 23:04:22,080 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/data/55cd9a186/2a73579452bc406f8e97fdb9c973c0d0/FLAGb2fe25232 [2023-11-24 23:04:22,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/data/55cd9a186/2a73579452bc406f8e97fdb9c973c0d0 [2023-11-24 23:04:22,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:04:22,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:04:22,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:04:22,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:04:22,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:04:22,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11fec4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22, skipping insertion in model container [2023-11-24 23:04:22,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:04:22,295 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_04153471-84af-4647-b4d5-b96aab03e74f/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c[489,502] [2023-11-24 23:04:22,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:04:22,327 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:04:22,343 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_04153471-84af-4647-b4d5-b96aab03e74f/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c[489,502] [2023-11-24 23:04:22,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:04:22,393 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:04:22,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22 WrapperNode [2023-11-24 23:04:22,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:04:22,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:04:22,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:04:22,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:04:22,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,435 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2023-11-24 23:04:22,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:04:22,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:04:22,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:04:22,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:04:22,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:04:22,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:04:22,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:04:22,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:04:22,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:04:22,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:04:22,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:04:22,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04153471-84af-4647-b4d5-b96aab03e74f/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:04:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:04:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:04:22,541 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:04:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:04:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:04:22,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:04:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:04:22,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:04:22,630 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:04:22,632 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:04:22,838 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:04:22,891 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:04:22,904 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:04:22,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:04:22 BoogieIcfgContainer [2023-11-24 23:04:22,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:04:22,908 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:04:22,908 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:04:22,918 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:04:22,918 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:04:22" (1/1) ... [2023-11-24 23:04:22,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:04:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 24 states and 34 transitions. [2023-11-24 23:04:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2023-11-24 23:04:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:04:23,001 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:04:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 24 states and 32 transitions. [2023-11-24 23:04:23,306 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2023-11-24 23:04:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:04:23,307 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:23,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:04:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 26 states and 35 transitions. [2023-11-24 23:04:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-11-24 23:04:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:04:23,592 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:23,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:23,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-24 23:04:23,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:04:24,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 31 states and 50 transitions. [2023-11-24 23:04:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2023-11-24 23:04:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:04:24,245 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:24,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:24,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-24 23:04:24,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:04:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 38 states and 70 transitions. [2023-11-24 23:04:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2023-11-24 23:04:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:04:25,927 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:25,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 23:04:25,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:04:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 41 states and 77 transitions. [2023-11-24 23:04:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 77 transitions. [2023-11-24 23:04:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 23:04:27,813 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:27,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:27,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-24 23:04:27,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:04:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 46 states and 90 transitions. [2023-11-24 23:04:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 90 transitions. [2023-11-24 23:04:30,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 23:04:30,083 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:30,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:30,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:04:30,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:04:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 47 states and 91 transitions. [2023-11-24 23:04:30,276 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 91 transitions. [2023-11-24 23:04:30,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:04:30,277 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:30,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:30,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:04:30,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:04:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 57 states and 139 transitions. [2023-11-24 23:04:32,985 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 139 transitions. [2023-11-24 23:04:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:04:32,989 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:32,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:33,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 23:04:33,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:04:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 62 states and 162 transitions. [2023-11-24 23:04:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 162 transitions. [2023-11-24 23:04:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:04:35,639 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:35,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:35,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 23:04:35,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 23:04:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 64 states and 164 transitions. [2023-11-24 23:04:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 164 transitions. [2023-11-24 23:04:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:04:36,673 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:36,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:36,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 23:04:36,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 23:04:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 68 states and 180 transitions. [2023-11-24 23:04:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 180 transitions. [2023-11-24 23:04:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-24 23:04:38,513 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:38,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:38,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:04:38,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-24 23:04:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 74 states and 211 transitions. [2023-11-24 23:04:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 211 transitions. [2023-11-24 23:04:44,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-24 23:04:44,951 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:44,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:44,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:04:44,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-24 23:04:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 76 states and 214 transitions. [2023-11-24 23:04:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 214 transitions. [2023-11-24 23:04:46,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 23:04:46,696 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:46,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:46,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 23:04:46,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:04:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 79 states and 227 transitions. [2023-11-24 23:04:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 227 transitions. [2023-11-24 23:04:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:04:51,402 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:51,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:04:51,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:04:57,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 84 states and 255 transitions. [2023-11-24 23:04:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 255 transitions. [2023-11-24 23:04:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:04:57,683 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:57,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:04:57,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:04:57,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:04:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:05:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 88 states and 267 transitions. [2023-11-24 23:05:01,794 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 267 transitions. [2023-11-24 23:05:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:05:01,796 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:01,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:05:01,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:05:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 90 states and 269 transitions. [2023-11-24 23:05:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 269 transitions. [2023-11-24 23:05:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:05:03,874 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:03,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:03,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:05:03,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:05:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 92 states and 279 transitions. [2023-11-24 23:05:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 279 transitions. [2023-11-24 23:05:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:05:06,238 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:06,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:06,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-24 23:05:06,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:05:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:05:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 94 states and 281 transitions. [2023-11-24 23:05:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 281 transitions. [2023-11-24 23:05:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-24 23:05:08,465 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:05:08,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:05:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:05:08,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 23:05:08,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:05:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked.